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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5071) address HBase compatibility issues with trunk
Date Tue, 10 May 2016 18:30:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-5071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15278640#comment-15278640
] 

Sangjin Lee commented on YARN-5071:
-----------------------------------

Regarding #2, I don't think java 8 would be an issue, but things like updated dependencies
or changed hadoop-common APIs would be a problem. In principle, I don't think this is really
a HBase problem at the moment as 3.0.0 has not been released yet.

> address HBase compatibility issues with trunk
> ---------------------------------------------
>
>                 Key: YARN-5071
>                 URL: https://issues.apache.org/jira/browse/YARN-5071
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Sangjin Lee
>            Priority: Critical
>
> The trunk is now adding or planning to add more and more backward-incompatible changes.
Some examples include
> - remove v.1 metrics classes (HADOOP-12504)
> - update jersey version (HADOOP-9613)
> - target java 8 by default (HADOOP-11858)
> This poses big challenges for the timeline service v.2 as we have a dependency on hbase
which depends on an older version of hadoop.
> We need to find a way to solve/contain/manage these risks before it is too late.



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