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https://issues.apache.org/jira/browse/HDFS-13310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ewan Higgs updated HDFS-13310:
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Status: Patch Available (was: Open)
Adding patch that introduces the API between NN and DN through the Heartbeat
Response DatanodeCommand mechanism.
We have an implementation, but I've broken it out here to bring the patch down
to a manageable size.
> [WRITE] The DatanodeProtocol should be have DNA_BACKUP to backup blocks
> -----------------------------------------------------------------------
>
> Key: HDFS-13310
> URL: https://issues.apache.org/jira/browse/HDFS-13310
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Ewan Higgs
> Assignee: Ewan Higgs
> Priority: Major
> Attachments: HDFS-13310-HDFS-12090.001.patch
>
>
> As part of HDFS-12090, Datanodes should be able to receive DatanodeCommands
> in the heartbeat response that instructs it to backup a block.
> This should take the form of two sub commands: PUT_FILE (when the file is <=1
> block in size) and MULTIPART_PUT_PART when part of a Multipart Upload (see
> HDFS-13186).
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