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https://issues.apache.org/jira/browse/HDFS-5020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HDFS-5020:
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Hadoop Flags: Reviewed
+1 for the new patch. Thanks for addressing the feedback, Jing!
> Make DatanodeProtocol#blockReceivedAndDeleted idempotent
> --------------------------------------------------------
>
> Key: HDFS-5020
> URL: https://issues.apache.org/jira/browse/HDFS-5020
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-5020.001.patch, HDFS-5020.002.patch,
> HDFS-5020.003.patch
>
>
> Currently DatanodeProtocol#blockReceivedAndDeleted is not idempotent because
> pending replication maps in NN only tracks the number of the pending
> replicas, and a retry request about a received block can cause the pending
> number decreased more than once. We can make blockReceivedAndDeleted
> idempotent by tracking corresponding datanodes in the pending replication
> map.
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