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https://issues.apache.org/jira/browse/YARN-2709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180015#comment-14180015
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Hudson commented on YARN-2709:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1934 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1934/])
YARN-2709. Made timeline client getDelegationToken API retry if 
ConnectException happens. Contributed by Li Lu. (zjshen: rev 
b2942762d7f76d510ece5621c71116346a6b12f6)
* hadoop-yarn-project/CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestTimelineClient.java


> Add retry for timeline client getDelegationToken method
> -------------------------------------------------------
>
>                 Key: YARN-2709
>                 URL: https://issues.apache.org/jira/browse/YARN-2709
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Li Lu
>            Assignee: Li Lu
>             Fix For: 2.6.0
>
>         Attachments: YARN-2709-102014-1.patch, YARN-2709-102014.patch, 
> YARN-2709-102114-2.patch, YARN-2709-102114.patch
>
>
> As mentioned in YARN-2673, we need to add retry mechanism to timeline client 
> for secured clusters. This means if the timeline server is not available, a 
> timeline client needs to retry to get a delegation token. 



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