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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4074) [timeline reader] implement support for querying for flows and flow runs
Date Tue, 01 Sep 2015 19:22:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725918#comment-14725918
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Varun Saxena commented on YARN-4074:
------------------------------------

Correction to point 1 :
As TreeSet has been used to sort FlowActivityEntity objects in HbaseTimelineReaderImpl#getFlowActivityEntities,
we should either set the fields used in TimelineEntity#compareTo or provide a compareTo method
in FlowActivityEntity class itself. Otherwise *it leads to NPE*. I guess entities need to
be sorted by date. In which case latter needs to be done.

> [timeline reader] implement support for querying for flows and flow runs
> ------------------------------------------------------------------------
>
>                 Key: YARN-4074
>                 URL: https://issues.apache.org/jira/browse/YARN-4074
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Sangjin Lee
>         Attachments: YARN-4074-YARN-2928.POC.001.patch, YARN-4074-YARN-2928.POC.002.patch
>
>
> Implement support for querying for flows and flow runs.
> We should be able to query for the most recent N flows, etc.
> This includes changes to the {{TimelineReader}} API if necessary, as well as implementation
of the API.



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