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https://issues.apache.org/jira/browse/YARN-10068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17008581#comment-17008581
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Anand Srinivasan commented on YARN-10068:
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Hi Prabhu,
Based on our discussion, I removed resp = null as it seems to be redundant and
generated the 2nd patch.
Could you please review the changes ?
Thanks and kind regards.
> TimelineV2Client may leak file descriptors creating ClientResponse objects.
> ---------------------------------------------------------------------------
>
> Key: YARN-10068
> URL: https://issues.apache.org/jira/browse/YARN-10068
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: ATSv2
> Affects Versions: 3.0.0
> Environment: HDP VERSION3.1.4
> AMBARI VERSION2.7.4.0
> Reporter: Anand Srinivasan
> Assignee: Anand Srinivasan
> Priority: Critical
> Attachments: YARN-10068.001.patch, YARN-10068.002.patch,
> image-2020-01-02-14-58-12-773.png
>
>
> Hi team,
> Code-walkthrough between v1 and v2 of TimelineClient API revealed that v2 API
> TimelineV2ClientImpl#putObjects doesn't close ClientResponse objects under
> success status returned from Timeline Server. ClientResponse is closed only
> under erroneous response from the server using ClientResponse#getEntity.
> We also noticed that TimelineClient (v1) closes the ClientResponse object in
> TimelineWriter#putEntities by calling ClientResponse#getEntity in both
> success and error conditions from the server thereby avoiding this file
> descriptor leak.
> Customer's original issue and the symptom was that the NodeManager went down
> because of 'too many files open' condition where there were lots of
> CLOSED_WAIT sockets observed between the timeline client (from NM) and the
> timeline server hosts.
> Could you please help resolve this issue ? Thanks.
>
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