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https://issues.apache.org/jira/browse/HDFS-17300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18024720#comment-18024720
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ASF GitHub Bot commented on HDFS-17300:
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github-actions[bot] closed pull request #6414: HDFS-17300. [SBN READ] A rpc
call in Observer should throw ObserverRetryOnActiveException if its stateid is
always lower than client stateid for a configured time.
URL: https://github.com/apache/hadoop/pull/6414
> [SBN READ] A rpc call in Observer should throw
> ObserverRetryOnActiveException if its stateid is always lower than client
> stateid for a configured time.
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17300
> URL: https://issues.apache.org/jira/browse/HDFS-17300
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: liuguanghua
> Assignee: liuguanghua
> Priority: Major
> Labels: pull-request-available
>
>
> Now when Observer is enable, Observer will update its stateid through that
> EditLogTailer near-real-time tailing editlog form Active Namenode. And if a
> rpc call's stateid is lower than client stateid which may update from active
> namenode with msync, the call will be requeued into callqueue.
> This PR is intend to if a rpc call's stateid is always lower than client
> statid for a configured time , the call should throw
> ObserverRetryOnActiveException for client and client will go to active
> namenode for processing.
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