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https://issues.apache.org/jira/browse/HDFS-6867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14106282#comment-14106282
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Colin Patrick McCabe commented on HDFS-6867:
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Re: approach #2 in the design doc: there is some discussion of variable-length
blocks ongoing at HDFS-3689.
> For DFSOutputStream, do pipeline recovery for a single block in the background
> ------------------------------------------------------------------------------
>
> Key: HDFS-6867
> URL: https://issues.apache.org/jira/browse/HDFS-6867
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.0.0-alpha
> Reporter: Colin Patrick McCabe
> Attachments: HDFS-6867-design-20140820.pdf
>
>
> For DFSOutputStream, we should be able to do pipeline recovery in the
> background, while the user is continuing to write to the file. This is
> especially useful for long-lived clients that write to an HDFS file slowly.
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