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https://issues.apache.org/jira/browse/HDFS-9574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15089509#comment-15089509
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Daryn Sharp commented on HDFS-9574:
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+1 Looks good, few suggestions if you think they would add value, up to you.
{{DFSInputStream}}: Instead of tracking the {{retryList}} separately, would it
be easier to just add it back to the {{nodeList}} and set the {{isRetry}}
boolean?
{{DataXceiver}}: Might consider changing {{checkAccess}} to not require the
stream and just have it call {{getBufferedOutputStream}}.
> Reduce client failures during datanode restart
> ----------------------------------------------
>
> Key: HDFS-9574
> URL: https://issues.apache.org/jira/browse/HDFS-9574
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Attachments: HDFS-9574.patch, HDFS-9574.v2.patch, HDFS-9574.v3.patch
>
>
> Since DataXceiverServer is initialized before BP is fully up, client requests
> will fail until the datanode registers.
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