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https://issues.apache.org/jira/browse/HDFS-14146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16719542#comment-16719542
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Chao Sun commented on HDFS-14146:
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Attached patch v0 to return a proper response to client when error happens.
Also raising this to critical since when this happens, client will just get
stuck.
[~xkrogen], [~vagarychen], [~shv]: could you take a look? I couldn't find a
simple way to test this.
> Handle exception from internalQueueCall
> ---------------------------------------
>
> Key: HDFS-14146
> URL: https://issues.apache.org/jira/browse/HDFS-14146
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ipc
> Reporter: Chao Sun
> Assignee: Chao Sun
> Priority: Critical
> Attachments: HDFS-14146-HDFS-12943.000.patch
>
>
> When we re-queue RPC call, the {{internalQueueCall}} will potentially throw
> exceptions (e.g., RPC backoff), which is then swallowed. This will cause the
> RPC to be silently discarded without response to the client, which is not
> good.
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