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https://issues.apache.org/jira/browse/HDFS-3425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Li updated HDFS-3425:
-----------------------------

    Attachment: HDFS-3425.HDFS-3092.patch.2

re-base the patch with HDFS-3092 head.
                
> Enable standby namenode to tail edits from journal service
> ----------------------------------------------------------
>
>                 Key: HDFS-3425
>                 URL: https://issues.apache.org/jira/browse/HDFS-3425
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>         Attachments: HDFS-3425.HDFS-3092.patch, HDFS-3425.HDFS-3092.patch.2
>
>
> In an HA cluster with the journal service configured, namenode should get 
> edit logs from journal service instead of from local or shared storage 
> directories.  
> As one of the first steps towards this goal, this JIRA is to enable standby 
> namenode to tail edits from journal services. 

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