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https://issues.apache.org/jira/browse/HDFS-9050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14740028#comment-14740028
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Tsz Wo Nicholas Sze commented on HDFS-9050:
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What are the advantages by restricting updatePipeline RPC to only update the GS
of the block?
> updatePipeline RPC call should only update the GS of the block
> --------------------------------------------------------------
>
> Key: HDFS-9050
> URL: https://issues.apache.org/jira/browse/HDFS-9050
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.7.1
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-9050.00.patch
>
>
> The only usage of the call is in {{DataStreamer#updatePipeline}}, where
> {{newBlock}} differs from current {{block}} only in GS.
> Basically the RPC call is not supposed to update the {{poolID}}, {{ID}}, or
> {{numBytes}} of the block on NN.
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