HIVE-3810 : HiveHistory.log need to replace \r with space before writing Entry.value to historyfile (Mark Grover via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1500991 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4812 : Logical explain plan (Gunther Hagleitner V via Navis)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501036 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4796 : Increase coverage of package org.apache.hadoop.hive.common.metrics (Ivan Veselovsky)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501052 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4580 : Change DDLTask to report errors using canonical error messages rather than http status codes (Eugene Koifman via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501053 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4813 : Improve test coverage of package org.apache.hadoop.hive.ql.optimizer.pcr (Ivan Veselovsky via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501099 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4819 : Comments in CommonJoinOperator for aliasTag is not valid (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501129 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4829 : TestWebHCatE2e checkstyle violation causes all tests to fail (Eugene Koifman via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501463 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4810 [jira] Refactor exec package
(Gunther Hagleitner via Ashutosh Chauhan)

Summary:
HIVE-4810

The exec package contains both operators and classes used to execute the job. Moving the latter into a sub package makes the package slightly more manageable and will make it easier to provide a tez-based implementation.

Test Plan: Refactoring

Reviewers: ashutoshc

Reviewed By: ashutoshc

Differential Revision: https://reviews.facebook.net/D11625

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1501476 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into
HIVE-2206-3671-Improvement

Conflicts:
	ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMapRedUtils.java