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https://issues.apache.org/jira/browse/HDFS-589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hairong Kuang resolved HDFS-589.
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Resolution: Fixed
I've just committed this.
> Change block write protocol to support pipeline recovery
> --------------------------------------------------------
>
> Key: HDFS-589
> URL: https://issues.apache.org/jira/browse/HDFS-589
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: data-node, hdfs client
> Affects Versions: Append Branch
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Fix For: Append Branch
>
> Attachments: opWriteProtocol.patch, opWriteProtocol1.patch
>
>
> Current block write operation's header has the following fields:
> blockId blockGS pipelineSize isRecovery clientName hasSource source
> #datanodesInDownStreamPipeline downstreamDatanodes
> I'd like to change the header to be
> blockId blockGS pipelineSize clientName flags blockMinLen blockMaxLen newGS
> hasSource source #datanodesInDownStreamPipeline downstreamDatanodes
> With this protocol change, pipeline recovery will be performed when a mew
> pipeline is set up.
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