[jira] [Comment Edited] (YARN-8435) NPE when the same client simultaneously contact for the first time Yarn Router

["Giovanni Matteo Fumarola (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-8435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16528350#comment-16528350 ] 

Giovanni Matteo Fumarola edited comment on YARN-8435 at 6/29/18 10:59 PM:
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Thanks [~tanujnay] for validating the fix and to find the performance regression.
 [~NeoMatrix]  do you mind changing the code in a way that does not create the pipeline for every request?


was (Author: giovanni.fumarola):
Thanks [~tanujnay] for validating the fix and to find the performance regression.
[~NeoMatrix]  do you mind changing the code in a way that does not create the pipeline for every requests?

> NPE when the same client simultaneously contact for the first time Yarn Router
> ------------------------------------------------------------------------------
>
>                 Key: YARN-8435
>                 URL: https://issues.apache.org/jira/browse/YARN-8435
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: router
>    Affects Versions: 2.9.0, 3.0.2
>            Reporter: rangjiaheng
>            Priority: Critical
>         Attachments: YARN-8435.v1.patch, YARN-8435.v2.patch, YARN-8435.v3.patch, YARN-8435.v4.patch, YARN-8435.v5.patch
>
>
> When Two client process (with the same user name and the same hostname) begin to connect to yarn router at the same time, to submit application, kill application, ... and so on, then a java.lang.NullPointerException may throws from yarn router.
>  
>  



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