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Date: Tue, 10 May 2016 19:22:12 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12967064.1462901459000.156762.1462908132966@Atlassian.JIRA>
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Subject: [jira] [Commented] (YARN-5071) address HBase compatibility issues
 with trunk
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archived-at: Tue, 10 May 2016 19:22:14 -0000


    [ https://issues.apache.org/jira/browse/YARN-5071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15278704#comment-15278704 ] 

stack commented on YARN-5071:
-----------------------------

bq. what do you think for HBase's supporting trunk code?

We will have too sooner or later.

The three items listed here seem fine.

We don't do metrics v1.

Jersey could be tricky but we'll have to deal -- shade ours or just update.

HBase 2.0 will be jdk8. branch-1 is tested against jdk8.

What else you seeing?

> 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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