Repository: lf-edge/ekuiper
Pull request #1111 (2021-12-14 03:19:13)

Performance tunings


Patch:
diff --git a/.github/dockerfile/Dockerfile.centos b/.github/dockerfile/Dockerfile.centos
index ae7a1d32..55666274 100644
--- a/.github/dockerfile/Dockerfile.centos
+++ b/.github/dockerfile/Dockerfile.centos
@@ -16,7 +16,7 @@ FROM centos:7
 
 RUN yum install -y make wget git which rpm-build gcc
 
-ARG GO_VERSION=1.15.11
+ARG GO_VERSION=1.17.3
 
 RUN case $(arch) in \
         x86_64) \
diff --git a/.github/dockerfile/Dockerfile.debian b/.github/dockerfile/Dockerfile.debian
index 7cf889bc..d9517564 100644
--- a/.github/dockerfile/Dockerfile.debian
+++ b/.github/dockerfile/Dockerfile.debian
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ARG GO_VERSION=1.15.11
+ARG GO_VERSION=1.17.3
 FROM golang:${GO_VERSION} AS builder
 
 COPY . /go/kuiper
diff --git a/.github/workflows/build_base_image.yaml b/.github/workflows/build_base_image.yaml
index af33ba13..df7c1239 100644
--- a/.github/workflows/build_base_image.yaml
+++ b/.github/workflows/build_base_image.yaml
@@ -21,7 +21,7 @@ jobs:
           - debian
           - centos
         golang:
-          - 1.15.11
+          - 1.17.3
 
     steps:
       - uses: actions/checkout@v2
diff --git a/deploy/chart/kuiper/values.yaml b/deploy/chart/kuiper/values.yaml
index c972a776..9697530a 100644
--- a/deploy/chart/kuiper/values.yaml
+++ b/deploy/chart/kuiper/values.yaml
@@ -106,6 +106,8 @@ kuiperConfig:
       # There could be several hosts (host can be separated with comma), if same package could be found in the several hosts,
       # then the package in the 1st host will have the highest priority.
       pluginHosts: https://packages.emqx.net
+      # Whether to ignore case in SQL processing. Note that, the name of customized function by plugins are case-sensitive.
+      ignoreCase: true
 
     # The default options for all rules. Each rule can override this setting by defining its own option
     rule:
diff --git a/docs/en_US/operation/configuration_file.md b/docs/en_US/operation/configuration_file.md
index e2d1e20d..ae0757de 100644
--- a/docs/en_US/operation/configuration_file.md
+++ b/docs/en_US/operation/configuration_file.md
@@ -18,9 +18,13 @@ basic:
   rotateTime: 24
   # Maximum file storage hours
   maxAge: 72
+  # Whether to ignore case in SQL processing. Note that, the name of customized function by plugins are case-sensitive.
+  ignoreCase: true
 ```
 for debug option in basic following env is valid `KUIPER_BASIC_DEBUG=true` and if used debug value will be set to true.
 
+Configuration **ignoreCase** is used to ignore case in SQL processing. By default, it's set to true to comply with standard SQL. In this case, data ingested can be case-insensitive. If the column names in the SQL, stream definition and the ingested data can be unified as a case-sensitive name, it is recommended to set to true to gain a better performance.
+
 ## Log level
 
 ```yaml
diff --git a/docs/en_US/plugins/plugins_tutorial.md b/docs/en_US/plugins/plugins_tutorial.md
index 9f6c2a79..c17e2f16 100755
--- a/docs/en_US/plugins/plugins_tutorial.md
+++ b/docs/en_US/plugins/plugins_tutorial.md
@@ -154,7 +154,7 @@ Developing a plugin needs to extend the interface in eKuiper, so it must depend
 ```go
 module samplePlugin
 
-go 1.16
+go 1.17
 
 require (
 	github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -165,7 +165,7 @@ mysql.go also have a dependency for mysql package, so the finial go.mod is this.
  ```go
 module samplePlugin
 
-go 1.16
+go 1.17
 
 require (
 	github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -198,7 +198,7 @@ However, if developers create plugin project outside eKuiper, he needs following
       ```
       module samplePlugin
 
-      go 1.16
+      go 1.17
 
       require (
         github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -211,7 +211,7 @@ However, if developers create plugin project outside eKuiper, he needs following
       Here is an example if your plugin project in the same directory with eKuiper project
       ```
       module github.com/lf-edge/ekuiper
-      go 1.16
+      go 1.17
       require samplePlugin v0.0.0
       replace samplePlugin => ../samplePlugin   # replace samplePlugin with local samplePlugin module
       ```
@@ -286,7 +286,7 @@ cd $EKUIPER_SOURCE
 
 cat <<EOF >$EKUIPER_SOURCE/sample.mod
 module github.com/lf-edge/ekuiper
-go 1.16
+go 1.17
 require samplePlugin v0.0.0
 replace samplePlugin => $PLUGIN_SOURCE
 EOF
diff --git a/docs/zh_CN/operation/configuration_file.md b/docs/zh_CN/operation/configuration_file.md
index e5b7e813..56d7cbd9 100755
--- a/docs/zh_CN/operation/configuration_file.md
+++ b/docs/zh_CN/operation/configuration_file.md
@@ -15,7 +15,12 @@ basic:
   rotateTime: 24
   # Maximum file storage hours
   maxAge: 168
+  # Whether to ignore case in SQL processing. Note that, the name of customized function by plugins are case-sensitive.
+  ignoreCase: true
 ```
+
+配置项 **ignoreCase** 用于指定 SQL 处理中是否大小写无关。默认情况下，为了与标准 SQL 兼容，其值为 true 。从而使得输入数据的列名大小写可以与 SQL 中的定义不同。如果 SQL 语句中，流定义以及输入数据中可以保证列名大小写完全一致，则建议设置该值为 false 以获得更优的性能。
+
 ## 系统日志
 用户将名为 KuiperSyslogKey 的环境变量的值设置为 true 时，日志将打印到系统日志中。
 ## Cli 地址
diff --git a/docs/zh_CN/plugins/plugins_tutorial.md b/docs/zh_CN/plugins/plugins_tutorial.md
index cb33c11b..322eb706 100644
--- a/docs/zh_CN/plugins/plugins_tutorial.md
+++ b/docs/zh_CN/plugins/plugins_tutorial.md
@@ -148,7 +148,7 @@ samplePlugin
 ```go
 module samplePlugin
 
-go 1.16
+go 1.17
 
 require (
 	github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -158,7 +158,7 @@ require (
  ```go
 module samplePlugin
 
-go 1.16
+go 1.17
 
 require (
 	github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -190,7 +190,7 @@ require (
     1. 在插件项目下，运行 `go mod edit -replace github.com/lf-edge/ekuiper=$eKuiperPath`，使得 eKuiper 依赖指向本地 eKuiper，这里$eKuiperPath将被替换为步骤1下载目录，下同。这一步执行后的效果，这里有个例子:
        ```go
           module samplePlugin
-          go 1.16
+          go 1.17
 
           require (
             github.com/lf-edge/ekuiper v0.0.0-20200323140757-60d00241372b
@@ -201,7 +201,7 @@ require (
     2. 由于 Go 语言插件系统对依赖的路径有非常严格的要求，为了确保插件可以顺利运行，建议在 eKuiper 主项目里进行编译。在 eKuiper 项目里，添加如下名为 sample.mod 的文件并让它指向真正的插件项目，以便于插件编译。如果你的eKuiper与插件项目在同一目录，这里有个例子：
        ```
        module github.com/lf-edge/ekuiper
-       go 1.16
+       go 1.17
        require samplePlugin v0.0.0
        replace samplePlugin => ../samplePlugin   # replace samplePlugin with local samplePlugin module
        ```
@@ -279,7 +279,7 @@ cd $EKUIPER_SOURCE
 
 cat <<EOF >$EKUIPER_SOURCE/sample.mod
 module github.com/lf-edge/ekuiper
-go 1.16
+go 1.17
 require samplePlugin v0.0.0
 replace samplePlugin => $PLUGIN_SOURCE
 EOF
diff --git a/etc/kuiper.yaml b/etc/kuiper.yaml
index fc601529..a25a264e 100644
--- a/etc/kuiper.yaml
+++ b/etc/kuiper.yaml
@@ -29,6 +29,8 @@ basic:
   # There could be several hosts (host can be separated with comma), if same package could be found in the several hosts,
   # then the package in the 1st host will have the highest priority.
   pluginHosts: https://packages.emqx.net
+  # Whether to ignore case in SQL processing. Note that, the name of customized function by plugins are case-sensitive.
+  ignoreCase: true
 
 # The default options for all rules. Each rule can override this setting by defining its own option
 rule:
diff --git a/extensions.mod b/extensions.mod
index af636513..75da4cae 100644
--- a/extensions.mod
+++ b/extensions.mod
@@ -6,48 +6,52 @@ require (
 	github.com/PaesslerAG/jsonpath v0.1.1
 	github.com/alicebob/miniredis/v2 v2.15.1
 	github.com/benbjohnson/clock v1.0.0
-	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/eclipse/paho.mqtt.golang v1.3.5
-	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0
-	github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1
-	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
+	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.1.0
+	github.com/edgexfoundry/go-mod-messaging/v2 v2.1.0
 	github.com/gdexlab/go-render v1.0.1
+	github.com/go-redis/redis/v7 v7.3.0
 	github.com/golang-collections/collections v0.0.0-20130729185459-604e922904d3
+	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/golang/protobuf v1.5.2
 	github.com/gomodule/redigo v2.0.0+incompatible
-	github.com/google/uuid v1.2.0
+	github.com/google/uuid v1.3.0
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.3
-	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/imdario/mergo v0.3.12 // indirect
-	github.com/jehiah/go-strftime v0.0.0-20171201141054-1d33003b3869 // indirect
 	github.com/jhump/protoreflect v1.8.2
-	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible
-	github.com/lestrrat-go/strftime v1.0.3 // indirect
 	github.com/mattn/go-sqlite3 v1.14.5
-	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.4.1
 	github.com/msgpack-rpc/msgpack-rpc-go v0.0.0-20131026060856-c76397e1782b
-	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
-	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
 	github.com/pebbe/zmq4 v1.2.7
-	github.com/prometheus/client_golang v1.2.1
-	github.com/sirupsen/logrus v1.4.2
-	github.com/smartystreets/goconvey v1.6.4 // indirect
-	github.com/tebeka/strftime v0.1.5 // indirect
+	github.com/prometheus/client_golang v1.11.0
+	github.com/sirupsen/logrus v1.8.1
 	github.com/ugorji/go/codec v1.2.5
 	github.com/urfave/cli v1.22.0
 	go.nanomsg.org/mangos/v3 v3.2.1
 	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
 	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
 	google.golang.org/grpc v1.38.0
-	google.golang.org/protobuf v1.26.0
+	google.golang.org/protobuf v1.27.1
 	gopkg.in/ini.v1 v1.62.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
+require (
+	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
+	github.com/huandu/xstrings v1.3.2 // indirect
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/jehiah/go-strftime v0.0.0-20171201141054-1d33003b3869 // indirect
+	github.com/jonboulle/clockwork v0.2.2 // indirect
+	github.com/lestrrat-go/strftime v1.0.3 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
+	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
+	github.com/tebeka/strftime v0.1.5 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)
+
 replace github.com/lf-edge/ekuiper/extensions => ./extensions
 
-go 1.16
+go 1.17
diff --git a/extensions.sum b/extensions.sum
index bd7202b3..54c8936a 100644
--- a/extensions.sum
+++ b/extensions.sum
@@ -1,5 +1,7 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
@@ -13,75 +15,121 @@ github.com/PaesslerAG/gval v1.0.0/go.mod h1:y/nm5yEyTeX6av0OfKJNp9rBNj2XrGhAf5+v
 github.com/PaesslerAG/jsonpath v0.1.0/go.mod h1:4BzmtoM/PI8fPO4aQGIusjGxGir2BzcV0grWtFzq1Y8=
 github.com/PaesslerAG/jsonpath v0.1.1 h1:c1/AToHQMVsduPAa4Vh6xp2U0evy4t8SWp8imEsylIk=
 github.com/PaesslerAG/jsonpath v0.1.1/go.mod h1:lVboNxFGal/VwW6d9JzIy56bUsYAP6tH/x80vjnCseY=
+github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
+github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZpUGpz5+4FfNmIU+FmZg2P3Xaj2v2bfNWmk=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
 github.com/alicebob/miniredis/v2 v2.15.1 h1:Fw+ixAJPmKhCLBqDwHlTDqxUxp0xjEwXczEpt1B6r7k=
 github.com/alicebob/miniredis/v2 v2.15.1/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/aws/aws-sdk-go v1.38.68/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
+github.com/aws/aws-sdk-go-v2 v1.7.0/go.mod h1:tb9wi5s61kTDA5qCkcDbt3KRVV74GGslQkl/DRdX/P4=
+github.com/aws/aws-sdk-go-v2/service/cloudwatch v1.5.0/go.mod h1:acH3+MQoiMzozT/ivU+DbRg7Ooo2298RdRaWcOv+4vM=
+github.com/aws/smithy-go v1.5.0/go.mod h1:SObp3lf9smib00L/v3U2eAKG8FyQ7iLrJnQiAmR5n+E=
 github.com/benbjohnson/clock v1.0.0 h1:78Jk/r6m4wCi6sndMpty7A//t4dw/RW5fV4ZgDVfX1w=
 github.com/benbjohnson/clock v1.0.0/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
+github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/casbin/casbin/v2 v2.31.6/go.mod h1:vByNa/Fchek0KZUgG5wEsl7iFsiviAYKRtgrQfcJqHg=
+github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/clbanning/x2j v0.0.0-20191024224557-825249438eec/go.mod h1:jMjuTZXRI4dUb/I5gc9Hdhagfvm9+RyrPryS/auMzxE=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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@@ -227,6 +370,7 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
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@@ -241,18 +385,32 @@ github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
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@@ -266,7 +424,9 @@ golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -276,48 +436,82 @@ golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -328,6 +522,7 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl
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@@ -335,6 +530,9 @@ google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZi
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@@ -348,23 +546,30 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
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 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
@@ -374,3 +579,4 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
diff --git a/extensions/go.mod b/extensions/go.mod
index 1ae7acac..f8ca1f15 100644
--- a/extensions/go.mod
+++ b/extensions/go.mod
@@ -1,6 +1,6 @@
 module github.com/lf-edge/ekuiper/extensions
 
-go 1.16
+go 1.17
 
 require (
 	github.com/go-redis/redis/v7 v7.3.0
@@ -13,4 +13,11 @@ require (
 	github.com/taosdata/driver-go/v2 v2.0.0
 )
 
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/mattn/go-pointer v0.0.0-20190911064623-a0a44394634f // indirect
+	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)
+
 replace github.com/lf-edge/ekuiper => ../
diff --git a/extensions/go.sum b/extensions/go.sum
index 82bce023..0271a299 100644
--- a/extensions/go.sum
+++ b/extensions/go.sum
@@ -1,5 +1,7 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
@@ -10,70 +12,110 @@ github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcy
 github.com/PaesslerAG/gval v1.0.0/go.mod h1:y/nm5yEyTeX6av0OfKJNp9rBNj2XrGhAf5+v24IBN1I=
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@@ -296,12 +471,16 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl
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 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -315,20 +494,26 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.25.1-0.20200805231151-a709e31e5d12/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
@@ -339,3 +524,4 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
diff --git a/extensions/sinks/tdengine/tdengine.go b/extensions/sinks/tdengine/tdengine.go
index c8250c15..10ca681b 100644
--- a/extensions/sinks/tdengine/tdengine.go
+++ b/extensions/sinks/tdengine/tdengine.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build plugins
 // +build plugins
 
 package main
@@ -19,7 +20,6 @@ package main
 import (
 	"database/sql"
 	"fmt"
-	"github.com/lf-edge/ekuiper/internal/conf"
 	"github.com/lf-edge/ekuiper/pkg/api"
 	"github.com/lf-edge/ekuiper/pkg/cast"
 	"github.com/lf-edge/ekuiper/pkg/errorx"
@@ -123,15 +123,12 @@ func (m *taosSink) Configure(props map[string]interface{}) error {
 	}
 	if cfg.Ip == "" {
 		cfg.Ip = "127.0.0.1"
-		conf.Log.Infof("Not find IP conf, will use default value '127.0.0.1'.")
 	}
 	if cfg.User == "" {
 		cfg.User = "root"
-		conf.Log.Infof("Not find user conf, will use default value 'root'.")
 	}
 	if cfg.Password == "" {
 		cfg.Password = "taosdata"
-		conf.Log.Infof("Not find password conf, will use default value 'taosdata'.")
 	}
 	if cfg.Database == "" {
 		return fmt.Errorf("property database is required")
diff --git a/go.mod b/go.mod
index 9e2e52bb..1b3c9163 100644
--- a/go.mod
+++ b/go.mod
@@ -6,46 +6,75 @@ require (
 	github.com/PaesslerAG/jsonpath v0.1.1
 	github.com/alicebob/miniredis/v2 v2.15.1
 	github.com/benbjohnson/clock v1.0.0
-	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/eclipse/paho.mqtt.golang v1.3.5
-	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0
-	github.com/edgexfoundry/go-mod-messaging/v2 v2.0.1
-	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
+	github.com/edgexfoundry/go-mod-core-contracts/v2 v2.1.0
+	github.com/edgexfoundry/go-mod-messaging/v2 v2.1.0
 	github.com/gdexlab/go-render v1.0.1
+	github.com/go-redis/redis/v7 v7.3.0
 	github.com/golang-collections/collections v0.0.0-20130729185459-604e922904d3
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/golang/protobuf v1.5.2
 	github.com/gomodule/redigo v2.0.0+incompatible
-	github.com/google/uuid v1.2.0
+	github.com/google/uuid v1.3.0
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.3
-	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/imdario/mergo v0.3.12 // indirect
-	github.com/jehiah/go-strftime v0.0.0-20171201141054-1d33003b3869 // indirect
 	github.com/jhump/protoreflect v1.8.2
-	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible
-	github.com/lestrrat-go/strftime v1.0.3 // indirect
 	github.com/mattn/go-sqlite3 v1.14.5
-	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.4.1
 	github.com/msgpack-rpc/msgpack-rpc-go v0.0.0-20131026060856-c76397e1782b
-	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
 	github.com/pebbe/zmq4 v1.2.7
-	github.com/prometheus/client_golang v1.2.1
-	github.com/sirupsen/logrus v1.4.2
-	github.com/smartystreets/goconvey v1.6.4 // indirect
-	github.com/tebeka/strftime v0.1.5 // indirect
+	github.com/prometheus/client_golang v1.11.0
+	github.com/sirupsen/logrus v1.8.1
 	github.com/ugorji/go/codec v1.2.5
 	github.com/urfave/cli v1.22.0
 	go.nanomsg.org/mangos/v3 v3.2.1
 	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
 	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
 	google.golang.org/grpc v1.38.0
-	google.golang.org/protobuf v1.26.0
+	google.golang.org/protobuf v1.27.1
 	gopkg.in/ini.v1 v1.62.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
-go 1.16
+require (
+	github.com/Masterminds/goutils v1.1.1 // indirect
+	github.com/Masterminds/semver/v3 v3.1.1 // indirect
+	github.com/Microsoft/go-winio v0.4.11 // indirect
+	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/cpuguy83/go-md2man v1.0.10 // indirect
+	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
+	github.com/fxamacker/cbor/v2 v2.3.0 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.9.0 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/huandu/xstrings v1.3.2 // indirect
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/jehiah/go-strftime v0.0.0-20171201141054-1d33003b3869 // indirect
+	github.com/jonboulle/clockwork v0.2.2 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/lestrrat-go/strftime v1.0.3 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/msgpack/msgpack-go v0.0.0-20130625150338-8224460e6fa3 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
+	github.com/russross/blackfriday v1.5.2 // indirect
+	github.com/shopspring/decimal v1.2.0 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/tebeka/strftime v0.1.5 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da // indirect
+	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
+	golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069 // indirect
+	golang.org/x/text v0.3.6 // indirect
+)
+
+go 1.17
diff --git a/go.sum b/go.sum
index b5ddadce..7c95fdc0 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,7 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
@@ -13,22 +15,38 @@ github.com/PaesslerAG/gval v1.0.0/go.mod h1:y/nm5yEyTeX6av0OfKJNp9rBNj2XrGhAf5+v
 github.com/PaesslerAG/jsonpath v0.1.0/go.mod h1:4BzmtoM/PI8fPO4aQGIusjGxGir2BzcV0grWtFzq1Y8=
 github.com/PaesslerAG/jsonpath v0.1.1 h1:c1/AToHQMVsduPAa4Vh6xp2U0evy4t8SWp8imEsylIk=
 github.com/PaesslerAG/jsonpath v0.1.1/go.mod h1:lVboNxFGal/VwW6d9JzIy56bUsYAP6tH/x80vjnCseY=
+github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
+github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZpUGpz5+4FfNmIU+FmZg2P3Xaj2v2bfNWmk=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
 github.com/alicebob/miniredis/v2 v2.15.1 h1:Fw+ixAJPmKhCLBqDwHlTDqxUxp0xjEwXczEpt1B6r7k=
 github.com/alicebob/miniredis/v2 v2.15.1/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/aws/aws-sdk-go v1.38.68/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
+github.com/aws/aws-sdk-go-v2 v1.7.0/go.mod h1:tb9wi5s61kTDA5qCkcDbt3KRVV74GGslQkl/DRdX/P4=
+github.com/aws/aws-sdk-go-v2/service/cloudwatch v1.5.0/go.mod h1:acH3+MQoiMzozT/ivU+DbRg7Ooo2298RdRaWcOv+4vM=
+github.com/aws/smithy-go v1.5.0/go.mod h1:SObp3lf9smib00L/v3U2eAKG8FyQ7iLrJnQiAmR5n+E=
 github.com/benbjohnson/clock v1.0.0 h1:78Jk/r6m4wCi6sndMpty7A//t4dw/RW5fV4ZgDVfX1w=
 github.com/benbjohnson/clock v1.0.0/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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@@ -231,6 +371,7 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
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@@ -245,19 +386,33 @@ github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
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@@ -271,7 +426,9 @@ golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -281,48 +438,82 @@ golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -333,6 +524,7 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl
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@@ -340,6 +532,9 @@ google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZi
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@@ -353,29 +548,36 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
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+google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
 gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
diff --git a/internal/conf/conf.go b/internal/conf/conf.go
index 3e7442b3..bb939d13 100644
--- a/internal/conf/conf.go
+++ b/internal/conf/conf.go
@@ -53,6 +53,7 @@ type KuiperConf struct {
 		PrometheusPort int      `yaml:"prometheusPort"`
 		PluginHosts    string   `yaml:"pluginHosts"`
 		Authentication bool     `yaml:"authentication"`
+		IgnoreCase     bool     `yaml:"ignoreCase"`
 	}
 	Rule api.RuleOption
 	Sink struct {
diff --git a/internal/plugin/portable/runtime/source.go b/internal/plugin/portable/runtime/source.go
index 54eb4bd9..44c382d2 100644
--- a/internal/plugin/portable/runtime/source.go
+++ b/internal/plugin/portable/runtime/source.go
@@ -96,7 +96,7 @@ func (ps *PortableSource) Open(ctx api.StreamContext, consumer chan<- api.Source
 		switch err {
 		case mangos.ErrClosed:
 			ctx.GetLogger().Info("stop source after close")
-			break
+			return
 		case mangos.ErrRecvTimeout:
 			ctx.GetLogger().Debug("source receive timeout, retry")
 			continue
diff --git a/internal/service/schema.go b/internal/service/schema.go
index bb5d3389..ef9ed18b 100644
--- a/internal/service/schema.go
+++ b/internal/service/schema.go
@@ -315,7 +315,7 @@ func (d *wrappedProtoDescriptor) unfoldMap(ft *desc.MessageDescriptor, i interfa
 	result := make([]interface{}, len(fields))
 	if m, ok := xsql.ToMessage(i); ok {
 		for _, field := range fields {
-			v, ok := m.Value(field.GetName())
+			v, ok := m.Value(field.GetName(), "")
 			if !ok {
 				return nil, fmt.Errorf("field %s not found", field.GetName())
 			}
diff --git a/internal/topo/node/node.go b/internal/topo/node/node.go
index 49a7c766..37a23110 100644
--- a/internal/topo/node/node.go
+++ b/internal/topo/node/node.go
@@ -104,21 +104,19 @@ func (o *defaultNode) Broadcast(val interface{}) error {
 }
 
 func (o *defaultNode) doBroadcast(val interface{}) error {
-	logger := o.ctx.GetLogger()
 	var wg sync.WaitGroup
 	wg.Add(len(o.outputs))
 	for n, out := range o.outputs {
 		go func(name string, output chan<- interface{}) {
 			select {
 			case output <- val:
-				logger.Debugf("broadcast from %s to %s done", o.ctx.GetOpId(), name)
+				// do nothing
 			case <-o.ctx.Done():
 				// rule stop so stop waiting
 			}
 			wg.Done()
 		}(n, out)
 	}
-	logger.Debugf("broadcasting from %s", o.ctx.GetOpId())
 	wg.Wait()
 	return nil
 }
diff --git a/internal/topo/node/source_node.go b/internal/topo/node/source_node.go
index cde4f363..74dd12c8 100644
--- a/internal/topo/node/source_node.go
+++ b/internal/topo/node/source_node.go
@@ -136,7 +136,6 @@ func (m *SourceNode) Open(ctx api.StreamContext, errCh chan<- error) {
 						tuple := &xsql.Tuple{Emitter: m.name, Message: data.Message(), Timestamp: conf.GetNowInMilli(), Metadata: data.Meta()}
 						processedData := m.preprocessOp.Apply(ctx, tuple, nil, nil)
 						stats.ProcessTimeEnd()
-						logger.Debugf("source node %s is sending tuple %+v of timestamp %d", m.name, tuple, tuple.Timestamp)
 						//blocking
 						switch val := processedData.(type) {
 						case nil:
@@ -161,7 +160,6 @@ func (m *SourceNode) Open(ctx api.StreamContext, errCh chan<- error) {
 								logger.Debugf("Source save offset %v", offset)
 							}
 						}
-						logger.Debugf("source node %s has consumed tuple of timestamp %d", m.name, tuple.Timestamp)
 					}
 				}
 			}(i)
diff --git a/internal/topo/node/source_pool.go b/internal/topo/node/source_pool.go
index 98099312..c722abc9 100644
--- a/internal/topo/node/source_pool.go
+++ b/internal/topo/node/source_pool.go
@@ -203,13 +203,11 @@ func (ss *sourceSingleton) run(name, key string) {
 }
 
 func (ss *sourceSingleton) broadcast(val api.SourceTuple) {
-	logger := ss.ctx.GetLogger()
 	ss.RLock()
 	for n, out := range ss.outputs {
 		go func(name string, dataCh *DynamicChannelBuffer) {
 			select {
 			case dataCh.In <- val:
-				logger.Debugf("broadcast from source pool to %s done", name)
 			case <-ss.ctx.Done():
 			case <-dataCh.done:
 				// detached
diff --git a/internal/topo/operator/field_processor.go b/internal/topo/operator/field_processor.go
index 10963223..cb0264fd 100644
--- a/internal/topo/operator/field_processor.go
+++ b/internal/topo/operator/field_processor.go
@@ -52,7 +52,7 @@ func (p *defaultFieldProcessor) processField(tuple *xsql.Tuple, _ *xsql.Function
 				if p.isBinary {
 					result = tuple.Message
 				} else {
-					if m, ok := tuple.Message.Value(sf); ok {
+					if m, ok := tuple.Message.Value(sf, ""); ok {
 						result[sf] = m
 					}
 				}
@@ -68,7 +68,7 @@ func (p *defaultFieldProcessor) processField(tuple *xsql.Tuple, _ *xsql.Function
 }
 
 func (p *defaultFieldProcessor) addRecField(ft ast.FieldType, r map[string]interface{}, j xsql.Message, n string) error {
-	if t, ok := j.Value(n); ok {
+	if t, ok := j.Value(n, ""); ok {
 		v := reflect.ValueOf(t)
 		jtype := v.Kind()
 		switch st := ft.(type) {
diff --git a/internal/topo/operator/preprocessor.go b/internal/topo/operator/preprocessor.go
index 7425926b..e2cb9c54 100644
--- a/internal/topo/operator/preprocessor.go
+++ b/internal/topo/operator/preprocessor.go
@@ -27,12 +27,14 @@ type Preprocessor struct {
 	allMeta        bool
 	metaFields     []string //only needed if not allMeta
 	isEventTime    bool
+	isSchemaless   bool
 	timestampField string
 }
 
-func NewPreprocessor(fields []interface{}, allMeta bool, metaFields []string, iet bool, timestampField string, timestampFormat string, isBinary bool, strictValidation bool) (*Preprocessor, error) {
+func NewPreprocessor(isSchemaless bool, fields []interface{}, allMeta bool, metaFields []string, iet bool, timestampField string, timestampFormat string, isBinary bool, strictValidation bool) (*Preprocessor, error) {
 	p := &Preprocessor{
-		allMeta: allMeta, metaFields: metaFields, isEventTime: iet, timestampField: timestampField}
+		allMeta: allMeta, metaFields: metaFields, isEventTime: iet,
+		isSchemaless: isSchemaless, timestampField: timestampField}
 	p.defaultFieldProcessor = defaultFieldProcessor{
 		streamFields: fields, isBinary: isBinary, timestampFormat: timestampFormat, strictValidation: strictValidation,
 	}
@@ -51,13 +53,19 @@ func (p *Preprocessor) Apply(ctx api.StreamContext, data interface{}, _ *xsql.Fu
 	}
 
 	log.Debugf("preprocessor receive %s", tuple.Message)
-
-	result, err := p.processField(tuple, nil)
-	if err != nil {
-		return fmt.Errorf("error in preprocessor: %s", err)
+	var (
+		result map[string]interface{}
+		err    error
+	)
+	if !p.isSchemaless && p.streamFields != nil {
+		result, err = p.processField(tuple, nil)
+		if err != nil {
+			return fmt.Errorf("error in preprocessor: %s", err)
+		}
+		tuple.Message = result
+	} else {
+		result = tuple.Message
 	}
-
-	tuple.Message = result
 	if p.isEventTime {
 		if t, ok := result[p.timestampField]; ok {
 			if ts, err := cast.InterfaceToUnixMilli(t, p.timestampFormat); err != nil {
@@ -70,14 +78,15 @@ func (p *Preprocessor) Apply(ctx api.StreamContext, data interface{}, _ *xsql.Fu
 			return fmt.Errorf("cannot find timestamp field %s in tuple %v", p.timestampField, result)
 		}
 	}
-	if !p.allMeta && p.metaFields != nil && len(p.metaFields) > 0 {
-		newMeta := make(xsql.Metadata)
-		for _, f := range p.metaFields {
-			if m, ok := tuple.Metadata.Value(f); ok {
-				newMeta[f] = m
-			}
-		}
-		tuple.Metadata = newMeta
-	}
+	// No need to reconstruct meta as the memory has been allocated earlier
+	//if !p.allMeta && p.metaFields != nil && len(p.metaFields) > 0 {
+	//	newMeta := make(xsql.Metadata)
+	//	for _, f := range p.metaFields {
+	//		if m, ok := tuple.Metadata.Value(f, ""); ok {
+	//			newMeta[f] = m
+	//		}
+	//	}
+	//	tuple.Metadata = newMeta
+	//}
 	return tuple
 }
diff --git a/internal/topo/operator/project_operator.go b/internal/topo/operator/project_operator.go
index 5dffb2eb..d23ff130 100644
--- a/internal/topo/operator/project_operator.go
+++ b/internal/topo/operator/project_operator.go
@@ -20,7 +20,6 @@ import (
 	"github.com/lf-edge/ekuiper/pkg/api"
 	"github.com/lf-edge/ekuiper/pkg/ast"
 	"github.com/lf-edge/ekuiper/pkg/message"
-	"strings"
 )
 
 type ProjectOp struct {
@@ -115,7 +114,7 @@ func (pp *ProjectOp) getVE(tuple xsql.DataValuer, agg xsql.AggregateData, fv *xs
 }
 
 func project(fs ast.Fields, ve *xsql.ValuerEval) (map[string]interface{}, error) {
-	result := make(map[string]interface{})
+	result := make(map[string]interface{}, len(fs))
 	for _, f := range fs {
 		v := ve.Eval(f.Expr)
 		if e, ok := v.(error); ok {
@@ -141,9 +140,7 @@ func project(fs ast.Fields, ve *xsql.ValuerEval) (map[string]interface{}, error)
 		} else {
 			if v != nil {
 				n := assignName(f.Name, f.AName)
-				if _, ok := result[n]; !ok {
-					result[n] = v
-				}
+				result[n] = v
 			}
 		}
 	}
@@ -151,12 +148,8 @@ func project(fs ast.Fields, ve *xsql.ValuerEval) (map[string]interface{}, error)
 }
 
 func assignName(name, alias string) string {
-	if result := strings.Trim(alias, " "); result != "" {
-		return result
-	}
-
-	if result := strings.Trim(name, " "); result != "" {
-		return result
+	if alias != "" {
+		return alias
 	}
-	return ""
+	return name
 }
diff --git a/internal/topo/operator/table_processor.go b/internal/topo/operator/table_processor.go
index 2f5addb1..c17dfb5d 100644
--- a/internal/topo/operator/table_processor.go
+++ b/internal/topo/operator/table_processor.go
@@ -25,6 +25,7 @@ type TableProcessor struct {
 	//Pruned stream fields. Could be streamField(with data type info) or string
 	defaultFieldProcessor
 
+	isSchemaless bool
 	isBatchInput bool // whether the inputs are batched, such as file which sends multiple messages at a batch. If batch input, only fires when EOF is received. This is mutual exclusive with retainSize.
 	retainSize   int  // how many(maximum) messages to be retained for each output
 	emitterName  string
@@ -33,8 +34,8 @@ type TableProcessor struct {
 	batchEmitted bool              // if batch input, this is the signal for whether the last batch has emitted. If true, reinitialize.
 }
 
-func NewTableProcessor(name string, fields []interface{}, options *ast.Options) (*TableProcessor, error) {
-	p := &TableProcessor{emitterName: name, batchEmitted: true, retainSize: 1}
+func NewTableProcessor(isSchemaless bool, name string, fields []interface{}, options *ast.Options) (*TableProcessor, error) {
+	p := &TableProcessor{emitterName: name, batchEmitted: true, retainSize: 1, isSchemaless: isSchemaless}
 	p.defaultFieldProcessor = defaultFieldProcessor{
 		streamFields: fields, isBinary: false, timestampFormat: options.TIMESTAMP_FORMAT,
 		strictValidation: options.STRICT_VALIDATION,
@@ -68,11 +69,13 @@ func (p *TableProcessor) Apply(ctx api.StreamContext, data interface{}, fv *xsql
 		p.batchEmitted = false
 	}
 	if tuple.Message != nil {
-		result, err := p.processField(tuple, fv)
-		if err != nil {
-			return fmt.Errorf("error in table processor: %s", err)
+		if !p.isSchemaless && p.streamFields != nil {
+			result, err := p.processField(tuple, nil)
+			if err != nil {
+				return fmt.Errorf("error in preprocessor: %s", err)
+			}
+			tuple.Message = result
 		}
-		tuple.Message = result
 		var newTuples []xsql.Tuple
 		for i, ot := range p.output.Tuples {
 			if p.retainSize > 0 && len(p.output.Tuples) == p.retainSize && i == 0 {
diff --git a/internal/topo/planner/planner.go b/internal/topo/planner/planner.go
index ff735971..7b4cc2a9 100644
--- a/internal/topo/planner/planner.go
+++ b/internal/topo/planner/planner.go
@@ -115,9 +115,10 @@ func buildOps(lp LogicalPlan, tp *topo.Topo, options *api.RuleOption, sources []
 	)
 	switch t := lp.(type) {
 	case *DataSourcePlan:
+		isSchemaless := t.streamStmt.StreamFields == nil
 		switch t.streamStmt.StreamType {
 		case ast.TypeStream:
-			pp, err := operator.NewPreprocessor(t.streamFields, t.allMeta, t.metaFields, t.iet, t.timestampField, t.timestampFormat, t.isBinary, t.streamStmt.Options.STRICT_VALIDATION)
+			pp, err := operator.NewPreprocessor(isSchemaless, t.streamFields, t.allMeta, t.metaFields, t.iet, t.timestampField, t.timestampFormat, t.isBinary, t.streamStmt.Options.STRICT_VALIDATION)
 			if err != nil {
 				return nil, 0, err
 			}
@@ -135,7 +136,7 @@ func buildOps(lp LogicalPlan, tp *topo.Topo, options *api.RuleOption, sources []
 			inputs = []api.Emitter{srcNode}
 			op = srcNode
 		case ast.TypeTable:
-			pp, err := operator.NewTableProcessor(string(t.name), t.streamFields, t.streamStmt.Options)
+			pp, err := operator.NewTableProcessor(isSchemaless, string(t.name), t.streamFields, t.streamStmt.Options)
 			if err != nil {
 				return nil, 0, err
 			}
diff --git a/internal/topo/sink/edgex_sink.go b/internal/topo/sink/edgex_sink.go
index f24fc96d..10bfec15 100644
--- a/internal/topo/sink/edgex_sink.go
+++ b/internal/topo/sink/edgex_sink.go
@@ -606,7 +606,7 @@ type eventMeta struct {
 	profileName string
 	sourceName  string
 	origin      *int64
-	tags        map[string]string
+	tags        map[string]interface{}
 }
 
 type readingMeta struct {
@@ -675,14 +675,7 @@ func newMetaFromMap(m1 map[string]interface{}) *meta {
 			}
 		case "tags":
 			if v1, ok1 := v.(map[string]interface{}); ok1 {
-				r := make(map[string]string)
-				for k, vi := range v1 {
-					s, ok := vi.(string)
-					if ok {
-						r[k] = s
-					}
-				}
-				result.tags = r
+				result.tags = v1
 			}
 		default:
 			if result.readingMetas == nil {
diff --git a/internal/xsql/collections.go b/internal/xsql/collections.go
index ec499bb6..31af318c 100644
--- a/internal/xsql/collections.go
+++ b/internal/xsql/collections.go
@@ -48,22 +48,15 @@ func ToMessage(input interface{}) (Message, bool) {
 }
 
 // Value returns the value for a key in the Message.
-func (m Message) Value(key string) (interface{}, bool) {
-	var colkey string
-	if keys := strings.Split(key, ast.COLUMN_SEPARATOR); len(keys) == 1 {
-		colkey = key
-	} else if len(keys) == 2 {
-		colkey = keys[1]
-	} else {
-		conf.Log.Println("Invalid key: " + key + ", expect source.field or field.")
-		return nil, false
-	}
-	if v, ok := m[colkey]; ok {
+func (m Message) Value(key, _ string) (interface{}, bool) {
+	if v, ok := m[key]; ok {
 		return v, ok
-	} else {
+	} else if conf.Config == nil || conf.Config.Basic.IgnoreCase {
 		//Only when with 'SELECT * FROM ...'  and 'schemaless', the key in map is not convert to lower case.
 		//So all of keys in map should be convert to lowercase and then compare them.
-		return m.getIgnoreCase(colkey)
+		return m.getIgnoreCase(key)
+	} else {
+		return nil, false
 	}
 }
 
@@ -78,11 +71,11 @@ func (m Message) getIgnoreCase(key interface{}) (interface{}, bool) {
 	return nil, false
 }
 
-func (m Message) Meta(key string) (interface{}, bool) {
+func (m Message) Meta(key, table string) (interface{}, bool) {
 	if key == "*" {
 		return map[string]interface{}(m), true
 	}
-	return m.Value(key)
+	return m.Value(key, table)
 }
 
 func (m Message) AppendAlias(k string, v interface{}) bool {
@@ -90,6 +83,10 @@ func (m Message) AppendAlias(k string, v interface{}) bool {
 	return false
 }
 
+func (m Message) AliasValue(_ string) (interface{}, bool) {
+	return nil, false
+}
+
 type Event interface {
 	GetTimestamp() int64
 	IsWatermark() bool
@@ -97,28 +94,29 @@ type Event interface {
 
 type Metadata Message
 
-func (m Metadata) Value(key string) (interface{}, bool) {
+func (m Metadata) Value(key, table string) (interface{}, bool) {
 	msg := Message(m)
-	return msg.Value(key)
+	return msg.Value(key, table)
 }
 
-func (m Metadata) Meta(key string) (interface{}, bool) {
+func (m Metadata) Meta(key, table string) (interface{}, bool) {
 	if key == "*" {
 		return map[string]interface{}(m), true
 	}
 	msg := Message(m)
-	return msg.Meta(key)
+	return msg.Meta(key, table)
 }
 
+// Alias alias will not need to convert cases
 type Alias struct {
-	AliasMap Message
+	AliasMap map[string]interface{}
 }
 
 func (a *Alias) AppendAlias(key string, value interface{}) bool {
 	if a.AliasMap == nil {
 		a.AliasMap = make(map[string]interface{})
 	}
-	a.AliasMap[PRIVATE_PREFIX+key] = value
+	a.AliasMap[key] = value
 	return true
 }
 
@@ -126,7 +124,8 @@ func (a *Alias) AliasValue(key string) (interface{}, bool) {
 	if a.AliasMap == nil {
 		return nil, false
 	}
-	return a.AliasMap.Value(key)
+	v, ok := a.AliasMap[key]
+	return v, ok
 }
 
 type Tuple struct {
@@ -137,19 +136,19 @@ type Tuple struct {
 	Alias
 }
 
-func (t *Tuple) Value(key string) (interface{}, bool) {
+func (t *Tuple) Value(key, table string) (interface{}, bool) {
 	r, ok := t.AliasValue(key)
 	if ok {
 		return r, ok
 	}
-	return t.Message.Value(key)
+	return t.Message.Value(key, table)
 }
 
-func (t *Tuple) Meta(key string) (interface{}, bool) {
+func (t *Tuple) Meta(key, table string) (interface{}, bool) {
 	if key == "*" {
 		return map[string]interface{}(t.Metadata), true
 	}
-	return t.Metadata.Value(key)
+	return t.Metadata.Value(key, table)
 }
 
 func (t *Tuple) All(string) (interface{}, bool) {
@@ -203,11 +202,11 @@ type WindowRangeValuer struct {
 	*WindowRange
 }
 
-func (r *WindowRangeValuer) Value(_ string) (interface{}, bool) {
+func (r *WindowRangeValuer) Value(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
-func (r *WindowRangeValuer) Meta(_ string) (interface{}, bool) {
+func (r *WindowRangeValuer) Meta(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
@@ -215,6 +214,10 @@ func (r *WindowRangeValuer) AppendAlias(_ string, _ interface{}) bool {
 	return false
 }
 
+func (r *WindowRangeValuer) AliasValue(_ string) (interface{}, bool) {
+	return nil, false
+}
+
 type WindowRange struct {
 	WindowStart int64
 	WindowEnd   int64
@@ -321,26 +324,20 @@ func (jt *JoinTuple) AddTuples(tuples []Tuple) {
 	}
 }
 
-func getTupleValue(tuple Tuple, t string, key string) (interface{}, bool) {
-	switch t {
-	case "value":
-		return tuple.Value(key)
-	case "meta":
-		return tuple.Meta(key)
-	default:
-		conf.Log.Errorf("cannot get tuple for type %s", t)
-		return nil, false
+func getTupleValue(tuple Tuple, key string, isVal bool) (interface{}, bool) {
+	if isVal {
+		return tuple.Value(key, "")
+	} else {
+		return tuple.Meta(key, "")
 	}
 }
 
-func (jt *JoinTuple) doGetValue(t string, key string) (interface{}, bool) {
-	keys := strings.Split(key, ast.COLUMN_SEPARATOR)
+func (jt *JoinTuple) doGetValue(key, table string, isVal bool) (interface{}, bool) {
 	tuples := jt.Tuples
-	switch len(keys) {
-	case 1:
+	if table == "" {
 		if len(tuples) > 1 {
 			for _, tuple := range tuples { //TODO support key without modifier?
-				v, ok := getTupleValue(tuple, t, key)
+				v, ok := getTupleValue(tuple, key, isVal)
 				if ok {
 					return v, ok
 				}
@@ -348,33 +345,29 @@ func (jt *JoinTuple) doGetValue(t string, key string) (interface{}, bool) {
 			conf.Log.Debugf("Wrong key: %s not found", key)
 			return nil, false
 		} else {
-			return getTupleValue(tuples[0], t, key)
+			return getTupleValue(tuples[0], key, isVal)
 		}
-	case 2:
-		emitter, key := keys[0], keys[1]
+	} else {
 		//TODO should use hash here
 		for _, tuple := range tuples {
-			if tuple.Emitter == emitter {
-				return getTupleValue(tuple, t, key)
+			if tuple.Emitter == table {
+				return getTupleValue(tuple, key, isVal)
 			}
 		}
 		return nil, false
-	default:
-		conf.Log.Infoln("Wrong key: ", key, ", expect dot in the expression.")
-		return nil, false
 	}
 }
 
-func (jt *JoinTuple) Value(key string) (interface{}, bool) {
+func (jt *JoinTuple) Value(key, table string) (interface{}, bool) {
 	r, ok := jt.AliasValue(key)
 	if ok {
 		return r, ok
 	}
-	return jt.doGetValue("value", key)
+	return jt.doGetValue(key, table, true)
 }
 
-func (jt *JoinTuple) Meta(key string) (interface{}, bool) {
-	return jt.doGetValue("meta", key)
+func (jt *JoinTuple) Meta(key, table string) (interface{}, bool) {
+	return jt.doGetValue(key, table, false)
 }
 
 func (jt *JoinTuple) All(stream string) (interface{}, bool) {
diff --git a/internal/xsql/funcValuer.go b/internal/xsql/funcValuer.go
index b2d619bd..3026eabd 100644
--- a/internal/xsql/funcValuer.go
+++ b/internal/xsql/funcValuer.go
@@ -31,11 +31,11 @@ func NewFunctionValuer(p *funcRuntime) *FunctionValuer {
 	return fv
 }
 
-func (*FunctionValuer) Value(string) (interface{}, bool) {
+func (*FunctionValuer) Value(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
-func (*FunctionValuer) Meta(string) (interface{}, bool) {
+func (*FunctionValuer) Meta(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
@@ -43,6 +43,10 @@ func (*FunctionValuer) AppendAlias(string, interface{}) bool {
 	return false
 }
 
+func (*FunctionValuer) AliasValue(string) (interface{}, bool) {
+	return nil, false
+}
+
 func (fv *FunctionValuer) Call(name string, args []interface{}) (interface{}, bool) {
 	nf, fctx, err := fv.runtime.Get(name)
 	switch err {
diff --git a/internal/xsql/funcsAggregate.go b/internal/xsql/funcsAggregate.go
index 35a517b7..670d9088 100644
--- a/internal/xsql/funcsAggregate.go
+++ b/internal/xsql/funcsAggregate.go
@@ -45,11 +45,11 @@ func (v *AggregateFunctionValuer) GetSingleCallValuer() CallValuer {
 	return v.fv
 }
 
-func (v *AggregateFunctionValuer) Value(string) (interface{}, bool) {
+func (v *AggregateFunctionValuer) Value(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
-func (v *AggregateFunctionValuer) Meta(string) (interface{}, bool) {
+func (v *AggregateFunctionValuer) Meta(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
@@ -64,6 +64,10 @@ func (*AggregateFunctionValuer) AppendAlias(string, interface{}) bool {
 	return false
 }
 
+func (v *AggregateFunctionValuer) AliasValue(_ string) (interface{}, bool) {
+	return nil, false
+}
+
 func (v *AggregateFunctionValuer) Call(name string, args []interface{}) (interface{}, bool) {
 	nf, fctx, err := v.fv.runtime.Get(name)
 	switch err {
diff --git a/internal/xsql/parser.go b/internal/xsql/parser.go
index 15d41e5c..0cb3be80 100644
--- a/internal/xsql/parser.go
+++ b/internal/xsql/parser.go
@@ -360,7 +360,13 @@ func (p *Parser) parseSorts() (ast.SortFields, error) {
 
 					p.unscan()
 					if name, err := p.parseFieldNameSections(); err == nil {
-						s.Name = strings.Join(name, ast.COLUMN_SEPARATOR)
+						if len(name) == 2 {
+							s.StreamName = ast.StreamName(name[0])
+							s.Name = name[1]
+						} else {
+							s.Name = name[0]
+						}
+						s.Uname = strings.Join(name, ast.COLUMN_SEPARATOR)
 					} else {
 						return nil, err
 					}
diff --git a/internal/xsql/valuer.go b/internal/xsql/valuer.go
index d5a17eef..8b25e2fb 100644
--- a/internal/xsql/valuer.go
+++ b/internal/xsql/valuer.go
@@ -22,7 +22,6 @@ import (
 	"math"
 	"reflect"
 	"sort"
-	"strings"
 	"time"
 )
 
@@ -34,9 +33,10 @@ var implicitValueFuncs = map[string]bool{
 // Valuer is the interface that wraps the Value() method.
 type Valuer interface {
 	// Value returns the value and existence flag for a given key.
-	Value(key string) (interface{}, bool)
-	Meta(key string) (interface{}, bool)
+	Value(key, table string) (interface{}, bool)
+	Meta(key, table string) (interface{}, bool)
 	AppendAlias(key string, value interface{}) bool
+	AliasValue(name string) (interface{}, bool)
 }
 
 // CallValuer implements the Call method for evaluating function calls.
@@ -73,21 +73,14 @@ type WildcardValuer struct {
 	Data Wildcarder
 }
 
-//TODO deal with wildcard of a stream, e.g. SELECT Table.* from Table inner join Table1
-func (wv *WildcardValuer) Value(key string) (interface{}, bool) {
-	if key == "" {
-		return wv.Data.All(key)
-	} else {
-		a := strings.Index(key, ast.COLUMN_SEPARATOR+"*")
-		if a <= 0 {
-			return nil, false
-		} else {
-			return wv.Data.All(key[:a])
-		}
+func (wv *WildcardValuer) Value(key, table string) (interface{}, bool) {
+	if key == "*" {
+		return wv.Data.All(table)
 	}
+	return nil, false
 }
 
-func (wv *WildcardValuer) Meta(string) (interface{}, bool) {
+func (wv *WildcardValuer) Meta(_, _ string) (interface{}, bool) {
 	return nil, false
 }
 
@@ -96,6 +89,10 @@ func (wv *WildcardValuer) AppendAlias(string, interface{}) bool {
 	return false
 }
 
+func (wv *WildcardValuer) AliasValue(_ string) (interface{}, bool) {
+	return nil, false
+}
+
 type SortingData interface {
 	Len() int
 	Swap(i, j int)
@@ -129,7 +126,7 @@ func (ms *MultiSorter) Less(i, j int) bool {
 	p, q := ms.values[i], ms.values[j]
 	v := &ValuerEval{Valuer: MultiValuer(ms.valuer)}
 	for _, field := range ms.fields {
-		n := field.Name
+		n := field.Uname
 		vp, _ := p[n]
 		vq, _ := q[n]
 		if vp == nil && vq != nil {
@@ -169,8 +166,7 @@ func (ms *MultiSorter) Sort(data SortingData) error {
 		p := data.Index(i)
 		vep := &ValuerEval{Valuer: MultiValuer(p, ms.valuer)}
 		for j, field := range ms.fields {
-			n := field.Name
-			vp, _ := vep.Valuer.Value(n)
+			vp, _ := vep.Valuer.Value(field.Name, string(field.StreamName))
 			if err, ok := vp.(error); ok {
 				return err
 			} else {
@@ -180,7 +176,7 @@ func (ms *MultiSorter) Sort(data SortingData) error {
 				if err := validate(types[j], vp); err != nil {
 					return err
 				} else {
-					ms.values[i][n] = vp
+					ms.values[i][field.Uname] = vp
 				}
 			}
 		}
@@ -256,18 +252,18 @@ func MultiValuer(valuers ...Valuer) Valuer {
 
 type multiValuer []Valuer
 
-func (a multiValuer) Value(key string) (interface{}, bool) {
+func (a multiValuer) Value(key, table string) (interface{}, bool) {
 	for _, valuer := range a {
-		if v, ok := valuer.Value(key); ok {
+		if v, ok := valuer.Value(key, table); ok {
 			return v, true
 		}
 	}
 	return nil, false
 }
 
-func (a multiValuer) Meta(key string) (interface{}, bool) {
+func (a multiValuer) Meta(key, table string) (interface{}, bool) {
 	for _, valuer := range a {
-		if v, ok := valuer.Meta(key); ok {
+		if v, ok := valuer.Meta(key, table); ok {
 			return v, true
 		}
 	}
@@ -283,6 +279,15 @@ func (a multiValuer) AppendAlias(key string, value interface{}) bool {
 	return false
 }
 
+func (a multiValuer) AliasValue(key string) (interface{}, bool) {
+	for _, valuer := range a {
+		if v, ok := valuer.AliasValue(key); ok {
+			return v, true
+		}
+	}
+	return nil, false
+}
+
 func (a multiValuer) FuncValue(key string) (interface{}, bool) {
 	for _, valuer := range a {
 		if vv, ok := valuer.(FuncValuer); ok {
@@ -422,44 +427,51 @@ func (v *ValuerEval) Eval(expr ast.Expr) interface{} {
 		}
 		return nil
 	case *ast.FieldRef:
-		var n string
-		if expr.IsAlias() { // alias is renamed internally to avoid accidentally evaled as a col with the same name
-			n = fmt.Sprintf("%s%s", PRIVATE_PREFIX, expr.Name)
+		var (
+			t, n string
+		)
+		if expr.IsAlias() {
+			val, ok := v.Valuer.AliasValue(expr.Name)
+			if ok {
+				return val
+			}
 		} else if expr.StreamName == ast.DefaultStream {
 			n = expr.Name
 		} else {
-			n = fmt.Sprintf("%s%s%s", string(expr.StreamName), ast.COLUMN_SEPARATOR, expr.Name)
+			t = string(expr.StreamName)
+			n = expr.Name
 		}
 		if n != "" {
-			val, ok := v.Valuer.Value(n)
+			val, ok := v.Valuer.Value(n, t)
 			if ok {
 				return val
 			}
 		}
 		if expr.IsAlias() {
 			r := v.Eval(expr.Expression)
+			// TODO possible performance elevation to eliminate this cal
 			v.Valuer.AppendAlias(expr.Name, r)
 			return r
 		}
 		return nil
 	case *ast.MetaRef:
 		if expr.StreamName == "" || expr.StreamName == ast.DefaultStream {
-			val, _ := v.Valuer.Meta(expr.Name)
+			val, _ := v.Valuer.Meta(expr.Name, "")
 			return val
 		} else {
 			//The field specified with stream source
-			val, _ := v.Valuer.Meta(string(expr.StreamName) + ast.COLUMN_SEPARATOR + expr.Name)
+			val, _ := v.Valuer.Meta(expr.Name, string(expr.StreamName))
 			return val
 		}
 	case *ast.JsonFieldRef:
-		val, ok := v.Valuer.Value(expr.Name)
+		val, ok := v.Valuer.Value(expr.Name, "")
 		if ok {
 			return val
 		} else {
 			return nil
 		}
 	case *ast.Wildcard:
-		val, _ := v.Valuer.Value("")
+		val, _ := v.Valuer.Value("*", "")
 		return val
 	case *ast.CaseExpr:
 		return v.evalCase(expr)
diff --git a/pkg/ast/statement.go b/pkg/ast/statement.go
index 51efb8f9..4b568f21 100644
--- a/pkg/ast/statement.go
+++ b/pkg/ast/statement.go
@@ -177,8 +177,10 @@ type Window struct {
 }
 
 type SortField struct {
-	Name      string
-	Ascending bool
+	Name       string
+	StreamName StreamName
+	Uname      string // unique name of a field
+	Ascending  bool
 
 	Expr
 }
diff --git a/sdk/go/example/mirror/go.mod b/sdk/go/example/mirror/go.mod
index f88945a8..84c47451 100644
--- a/sdk/go/example/mirror/go.mod
+++ b/sdk/go/example/mirror/go.mod
@@ -5,6 +5,14 @@ require (
 	github.com/mitchellh/mapstructure v1.4.1
 )
 
+require (
+	github.com/Microsoft/go-winio v0.4.11 // indirect
+	github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1 // indirect
+	github.com/sirupsen/logrus v1.8.1 // indirect
+	go.nanomsg.org/mangos/v3 v3.2.1 // indirect
+	golang.org/x/sys v0.0.0-20210510120138-977fb7262007 // indirect
+)
+
 replace github.com/lf-edge/ekuiper/sdk/go => ../../
 
-go 1.16
+go 1.17
diff --git a/sdk/go/example/mirror/go.sum b/sdk/go/example/mirror/go.sum
index 51d982ff..02ba623e 100644
--- a/sdk/go/example/mirror/go.sum
+++ b/sdk/go/example/mirror/go.sum
@@ -1,299 +1,22 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
-github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/Masterminds/sprig/v3 v3.2.1/go.mod h1:UoaO7Yp8KlPnJIYWTFkMaqPUYKTfGFPhxNuwnnxkKlk=
 github.com/Microsoft/go-winio v0.4.11 h1:zoIOcVf0xPN1tnMVbTtEdI+P8OofVk3NObnwOQ6nK2Q=
 github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
-github.com/PaesslerAG/gval v1.0.0/go.mod h1:y/nm5yEyTeX6av0OfKJNp9rBNj2XrGhAf5+v24IBN1I=
-github.com/PaesslerAG/jsonpath v0.1.0/go.mod h1:4BzmtoM/PI8fPO4aQGIusjGxGir2BzcV0grWtFzq1Y8=
-github.com/PaesslerAG/jsonpath v0.1.1/go.mod h1:lVboNxFGal/VwW6d9JzIy56bUsYAP6tH/x80vjnCseY=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
-github.com/alicebob/miniredis/v2 v2.15.1/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
-github.com/benbjohnson/clock v1.0.0/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eclipse/paho.mqtt.golang v1.3.5/go.mod h1:eTzb4gxwwyWpqBUHGQZ4ABAV7+Jgm1PklsYT/eo8Hcc=
-github.com/edgexfoundry/go-mod-core-contracts/v2 v2.0.0/go.mod h1:pfXURRetgIto0GR0sCjDrfa71hqJ1wxmQWi/mOzWfWU=
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-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
diff --git a/sdk/go/go.mod b/sdk/go/go.mod
index 213399ec..7fe739e2 100644
--- a/sdk/go/go.mod
+++ b/sdk/go/go.mod
@@ -1,6 +1,6 @@
 module github.com/lf-edge/ekuiper/sdk/go
 
-go 1.16
+go 1.17
 
 require (
 	github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1
@@ -9,6 +9,6 @@ require (
 )
 
 require (
-	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/Microsoft/go-winio v0.4.11 // indirect
 	golang.org/x/sys v0.0.0-20210510120138-977fb7262007 // indirect
 )
diff --git a/sdk/go/go.sum b/sdk/go/go.sum
index 965b027d..3461888e 100644
--- a/sdk/go/go.sum
+++ b/sdk/go/go.sum
@@ -4,8 +4,6 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gdamore/optopia v0.2.0/go.mod h1:YKYEwo5C1Pa617H7NlPcmQXl+vG6YnSSNB44n8dNL0Q=
 github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
-github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1 h1:JL2rWnBX8jnbHHlLcLde3BBWs+jzqZvOmF+M3sXoNOE=
 github.com/keepeye/logrus-filename v0.0.0-20190711075016-ce01a4391dd1/go.mod h1:nNLjpEi4xVFB7358xLPpPscdvXP+pbhiHgSmjIur8z0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
diff --git a/tools/kubernetes/go.mod b/tools/kubernetes/go.mod
index 90709b6d..10abbe27 100644
--- a/tools/kubernetes/go.mod
+++ b/tools/kubernetes/go.mod
@@ -2,8 +2,13 @@ module github.com/lf-edge/ekuiper/tools/kubernetes
 
 require (
 	github.com/sirupsen/logrus v1.4.2
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
-go 1.16
+require (
+	github.com/konsorten/go-windows-terminal-sequences v1.0.1 // indirect
+	golang.org/x/sys v0.0.0-20190422165155-953cdadca894 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+)
+
+go 1.17


Test patch:
diff --git a/.github/workflows/run_fvt_tests.yaml b/.github/workflows/run_fvt_tests.yaml
index 074b4c41..64878f68 100644
--- a/.github/workflows/run_fvt_tests.yaml
+++ b/.github/workflows/run_fvt_tests.yaml
@@ -41,7 +41,7 @@ jobs:
     steps:
     - uses: actions/setup-go@v1
       with:
-        go-version: '1.16'
+        go-version: '1.17'
     - uses: actions/setup-java@v1
       with:
         java-version: '8' # The JDK version to make available on the path.
@@ -131,7 +131,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v1
         with:
-          go-version: '1.16'
+          go-version: '1.17'
       - uses: actions/setup-java@v1
         with:
           java-version: '8' # The JDK version to make available on the path.
diff --git a/internal/topo/sink/edgex_sink_test.go b/internal/topo/sink/edgex_sink_test.go
index f295a0ec..40f06f0b 100644
--- a/internal/topo/sink/edgex_sink_test.go
+++ b/internal/topo/sink/edgex_sink_test.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build edgex
 // +build edgex
 
 package sink
@@ -290,7 +291,7 @@ func TestProduceEvents(t1 *testing.T) {
 				ProfileName: "demoProfile",
 				SourceName:  "demoSource",
 				Origin:      3,
-				Tags:        map[string]string{"auth": "admin"},
+				Tags:        map[string]interface{}{"auth": "admin"},
 				Readings: []dtos.BaseReading{
 					{
 						ResourceName:  "h1",
@@ -426,7 +427,7 @@ func TestProduceEvents(t1 *testing.T) {
 				ProfileName: "demoProfile",
 				SourceName:  "ds",
 				Origin:      3,
-				Tags:        map[string]string{"auth": "admin"},
+				Tags:        map[string]interface{}{"auth": "admin"},
 				Readings: []dtos.BaseReading{
 					{
 						DeviceName:    "demo",
diff --git a/internal/xsql/ast_test.go b/internal/xsql/ast_test.go
index e9cb9d0d..6a0b272b 100644
--- a/internal/xsql/ast_test.go
+++ b/internal/xsql/ast_test.go
@@ -25,6 +25,7 @@ import (
 func Test_MessageValTest(t *testing.T) {
 	var tests = []struct {
 		key     string
+		table   string
 		message Message
 		exptV   interface{}
 		exptOk  bool
@@ -60,7 +61,8 @@ func Test_MessageValTest(t *testing.T) {
 		},
 
 		{
-			key: "key1" + ast.COLUMN_SEPARATOR + "subkey",
+			key:   "subkey",
+			table: "key1",
 			message: Message{
 				"Key1":   "val1",
 				"subkey": "subval",
@@ -80,7 +82,8 @@ func Test_MessageValTest(t *testing.T) {
 		},
 
 		{
-			key: "parent" + ast.COLUMN_SEPARATOR + "child",
+			key:   "child",
+			table: "parent",
 			message: Message{
 				"key1":         "val1",
 				"child":        "child_val",
@@ -116,7 +119,7 @@ func Test_MessageValTest(t *testing.T) {
 	fmt.Printf("The test bucket size is %d.\n\n", len(tests))
 	for i, tt := range tests {
 		//fmt.Printf("Parsing SQL %q.\n", tt.s)
-		v, ok := tt.message.Value(tt.key)
+		v, ok := tt.message.Value(tt.key, tt.table)
 		if tt.exptOk != ok {
 			t.Errorf("%d. error mismatch:\n  exp=%t\n  got=%t\n\n", i, tt.exptOk, ok)
 		} else if tt.exptOk && !reflect.DeepEqual(tt.exptV, v) {
diff --git a/internal/xsql/parser_test.go b/internal/xsql/parser_test.go
index 8ad655d8..2b11eb2e 100644
--- a/internal/xsql/parser_test.go
+++ b/internal/xsql/parser_test.go
@@ -996,7 +996,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						},
 					},
 				},
-				SortFields: []ast.SortField{{Name: "name", Ascending: true}},
+				SortFields: []ast.SortField{{Uname: "name", Name: "name", Ascending: true}},
 			},
 		},
 
@@ -1017,7 +1017,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						},
 					},
 				},
-				SortFields: []ast.SortField{{Name: "s1\007name", Ascending: true}},
+				SortFields: []ast.SortField{{Uname: "s1\007name", Name: "name", StreamName: ast.StreamName("s1"), Ascending: true}},
 			},
 		},
 
@@ -1038,7 +1038,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						},
 					},
 				},
-				SortFields: []ast.SortField{{Name: "name", Ascending: false}},
+				SortFields: []ast.SortField{{Uname: "name", Name: "name", Ascending: false}},
 			},
 		},
 
@@ -1052,7 +1052,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						AName: ""},
 				},
 				Sources:    []ast.Source{&ast.Table{Name: "topic/sensor1"}},
-				SortFields: []ast.SortField{{Name: "name", Ascending: false}},
+				SortFields: []ast.SortField{{Uname: "name", Name: "name", Ascending: false}},
 			},
 		},
 
@@ -1066,7 +1066,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						AName: ""},
 				},
 				Sources:    []ast.Source{&ast.Table{Name: "topic/sensor1"}},
-				SortFields: []ast.SortField{{Name: "name", Ascending: false}, {Name: "name2", Ascending: true}},
+				SortFields: []ast.SortField{{Uname: "name", Name: "name", Ascending: false}, {Uname: "name2", Name: "name2", Ascending: true}},
 			},
 		},
 
@@ -1090,7 +1090,7 @@ func TestParser_ParseStatement(t *testing.T) {
 						},
 					},
 				},
-				SortFields: []ast.SortField{{Name: "name", Ascending: false}, {Name: "name2", Ascending: true}},
+				SortFields: []ast.SortField{{Uname: "name", Name: "name", Ascending: false}, {Uname: "name2", Name: "name2", Ascending: true}},
 			},
 		},