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Posted to issues@tajo.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2014/12/08 04:00:16 UTC
[jira] [Commented] (TAJO-1230) Disable ipv6 support on JVM
[ https://issues.apache.org/jira/browse/TAJO-1230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14237386#comment-14237386 ]
ASF GitHub Bot commented on TAJO-1230:
--------------------------------------
GitHub user ykrips opened a pull request:
https://github.com/apache/tajo/pull/291
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
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ykrips/tajo TAJO-1230
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/291.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #291
----
commit eefe43d742804db604a89ffddd2aa3f473eb5926
Author: Jihun Kang <yk...@gmail.com>
Date: 2014-12-08T02:56:21Z
TAJO-1230: Disable ipv6 support on JVM
----
> Disable ipv6 support on JVM
> ---------------------------
>
> Key: TAJO-1230
> URL: https://issues.apache.org/jira/browse/TAJO-1230
> Project: Tajo
> Issue Type: Improvement
> Reporter: Jihun Kang
> Assignee: Jihun Kang
> Priority: Minor
>
> This is not a critial issue, but each Tajo components internally use ipv4 address. Without this option, JVM will try to load ipv6 stacks on jvm processes and bind itself with ipv6 addresses. It could waste JVM resources and could be decreased network performance. If we don't have a plan to support ipv6 address, it could be better to turn off ipv6 support.
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