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https://issues.apache.org/jira/browse/HDFS-15323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HDFS-15323:
---------------------------------------
    Attachment: HDFS-15323-branch-2.10.002.patch

> StandbyNode fails transition to active due to insufficient transaction tailing
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-15323
>                 URL: https://issues.apache.org/jira/browse/HDFS-15323
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode, qjm
>    Affects Versions: 2.7.7
>            Reporter: Konstantin Shvachko
>            Priority: Major
>         Attachments: HDFS-15323-branch-2.10.002.patch, 
> HDFS-15323.000.unitTest.patch, HDFS-15323.001.patch, HDFS-15323.002.patch
>
>
> StandbyNode is asked to {{transitionToActive()}}. If it fell too far behind 
> in tailing journal transaction (from QJM) it can crash with 
> {{IllegalStateException}}.



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