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https://issues.apache.org/jira/browse/YARN-4234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009877#comment-15009877
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Li Lu commented on YARN-4234:
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Hi [~xgong], the current fix will force to close the current FD if the incoming 
write request is to a different entity group. This may generate a lot of files 
since users may switch to different entity groups arbitrarily. Meanwhile, we're 
changing the content of the concurrent hash table, but not enforcing strong 
consistency. Maybe we'd like to switch the hash map to use entity group id for 
each FDs? 

> New put APIs in TimelineClient for ats v1.5
> -------------------------------------------
>
>                 Key: YARN-4234
>                 URL: https://issues.apache.org/jira/browse/YARN-4234
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Xuan Gong
>            Assignee: Xuan Gong
>         Attachments: YARN-4234-2015-11-13.1.patch, 
> YARN-4234-2015-11-16.1.patch, YARN-4234-2015-11-16.2.patch, 
> YARN-4234-20151111.2.patch, YARN-4234.1.patch, YARN-4234.2.patch, 
> YARN-4234.2015-11-12.1.patch, YARN-4234.2015-11-12.1.patch, 
> YARN-4234.20151109.patch, YARN-4234.20151110.1.patch, 
> YARN-4234.20151111.1.patch, YARN-4234.3.patch
>
>
> In this ticket, we will add new put APIs in timelineClient to let 
> clients/applications have the option to use ATS v1.5



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