apache/tajo — pull request #291 by ykrips (2014-12-08 02:59:13+00:00)
Title: TAJO-1230: Disable ipv6 support on JVM

Before applying this option, it would be shown like following line.
```
tcp 0 0 127.0.0.1:26001 0.0.0.0:* LISTEN 4494/java
tcp 0 0 127.0.0.1:26002 0.0.0.0:* LISTEN 4494/java
tcp 0 0 127.0.0.1:26003 0.0.0.0:* LISTEN 4494/java
tcp 0 0 127.0.0.1:26005 0.0.0.0:* LISTEN 4494/java
tcp 0 0 0.0.0.0:26080 0.0.0.0:* LISTEN 4494/java
tcp 0 0 :::28091 :::* LISTEN 4692/java
tcp 0 0 :::28092 :::* LISTEN 4692/java
tcp 0 0 :::28093 :::* LISTEN 4692/java
tcp 0 0 :::38818 :::* LISTEN 4595/java
tcp 0 0 ::ffff:192.168.122.18:28080 :::* LISTEN 4692/java
```

With this disable IPv6 option, it will be disable the ipv6 capability on servers.
```
tcp 0 0 127.0.0.1:26001 0.0.0.0:* LISTEN 3796/java
tcp 0 0 127.0.0.1:26002 0.0.0.0:* LISTEN 3796/java
tcp 0 0 127.0.0.1:26003 0.0.0.0:* LISTEN 3796/java
tcp 0 0 127.0.0.1:26005 0.0.0.0:* LISTEN 3796/java
tcp 0 0 0.0.0.0:28091 0.0.0.0:* LISTEN 3995/java
tcp 0 0 0.0.0.0:28092 0.0.0.0:* LISTEN 3995/java
tcp 0 0 0.0.0.0:28093 0.0.0.0:* LISTEN 3995/java
tcp 0 0 0.0.0.0:26080 0.0.0.0:* LISTEN 3796/java
tcp 0 0 192.168.122.185:28080 0.0.0.0:* LISTEN 3995/java
tcp 0 0 0.0.0.0:11728 0.0.0.0:* LISTEN 3897/java
```