[jira] Updated: (HADOOP-6056) Use java.net.preferIPv4Stack to force IPv4

["Michele (aka pirroh) Catasta (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-6056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michele (aka pirroh) Catasta updated HADOOP-6056:
-------------------------------------------------

    Attachment: HADOOP-6056.patch.2

Hi Todd,

+1 on the trade-off you suggested. I added HADOOP_ALLOW_IPV6 in the attached patch. 

Should we also let it manage the preferIPv4Stack option? (e.g. if ALLOW, then preferIPv4stack=false). As of today, it won't be of any benefit.

As a side note, I've no idea how the final merging of the hadoop-env.sh.template files happens, so I just modified the one in hadoop-common.

> Use java.net.preferIPv4Stack to force IPv4
> ------------------------------------------
>
>                 Key: HADOOP-6056
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6056
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Steve Loughran
>            Assignee: Michele (aka pirroh) Catasta
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: HADOOP-6056.patch, HADOOP-6056.patch.2, hadoop-6056.txt
>
>
> This was mentioned on HADOOP-3427, there is a property,  java.net.preferIPv4Stack, which you set to true for the java net process to switch to IPv4 everywhere. 
> As Hadoop doesn't work on IPv6, this should be set to true in the startup scripts. Hopefully this will ensure that Jetty will also pick it up.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.