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https://issues.apache.org/jira/browse/HDFS-8786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15158183#comment-15158183
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Rakesh R commented on HDFS-8786:
--------------------------------
Attached patch to support decommissioning node which contains striped blocks.
Could you please review the patch when you get a chance. Thanks!
Following are the major changes:
- BlockManager will schedule data_transfer task to copy the block from
decommissioning src node to a target node.
- While adding new node BlockInfoStriped will keep the new node to the old
decommission node blkindex and move the old storage to the end of the
{{storages}} list. Later this decommission node index will get removed.
> Erasure coding: DataNode should transfer striped blocks before being
> decommissioned
> -----------------------------------------------------------------------------------
>
> Key: HDFS-8786
> URL: https://issues.apache.org/jira/browse/HDFS-8786
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Zhe Zhang
> Assignee: Rakesh R
> Attachments: HDFS-8786-001.patch, HDFS-8786-draft.patch
>
>
> Per [discussion |
> https://issues.apache.org/jira/browse/HDFS-8697?focusedCommentId=14609004&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14609004]
> under HDFS-8697, it's too expensive to reconstruct block groups for decomm
> purpose.
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