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https://issues.apache.org/jira/browse/HDFS-13610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526153#comment-16526153
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Erik Krogen commented on HDFS-13610:
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Thanks for the review [~linyiqun]!
* Done, good idea.
* I updated these docs to mention the standby read feature. I also reduced the 
width to make it more closely match the rest of this file (although there is 
not much consistency...)
* Whitespace issue fixed
Uploaded v003. [~shv] or [~vagarychen], want to take a look?

> [Edit Tail Fast Path Pt 4] Cleanup: integration test, documentation, remove 
> unnecessary dummy sync
> --------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-13610
>                 URL: https://issues.apache.org/jira/browse/HDFS-13610
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, journal-node, namenode
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Major
>         Attachments: HDFS-13610-HDFS-12943.000.patch, 
> HDFS-13610-HDFS-12943.001.patch, HDFS-13610-HDFS-12943.002.patch, 
> HDFS-13610-HDFS-12943.003.patch
>
>
> See HDFS-13150 for full design.
> This JIRA is targeted at cleanup tasks:
> * Add in integration testing. We can expand {{TestStandbyInProgressTail}}
> * Documentation in HDFSHighAvailabilityWithQJM
> * Remove the dummy sync added as part of HDFS-10519; it is unnecessary since 
> now in-progress tailing does not rely as heavily on the JN committedTxnId



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