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From "Li Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2673) Add retry for timeline client
Date Tue, 14 Oct 2014 23:38:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171717#comment-14171717
] 

Li Lu commented on YARN-2673:
-----------------------------

After checking through the code, I'm planning to separate this into two steps. In the first
step, we may want to add retry mechanisms to the jersey client that posts timeline entities
and domains. After this step, timeline clients for non-secured clusters will be able to retry
when timeline server is down. Then, on top of this, we can add retry mechanism to delegation
token calls for secured clusters. I'll focus on the non-secured part in this Jira. All secured
cluster/token related retry mechanisms will be uploaded to a separate Jira. 

> Add retry for timeline client
> -----------------------------
>
>                 Key: YARN-2673
>                 URL: https://issues.apache.org/jira/browse/YARN-2673
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Li Lu
>            Assignee: Li Lu
>
> Timeline client now does not handle the case gracefully when the server is down. Jobs
from distributed shell may fail due to ATS restart. We may need to add some retry mechanisms
to the client. 



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