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https://issues.apache.org/jira/browse/HDFS-7837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14341371#comment-14341371
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Zhe Zhang commented on HDFS-7837:
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Continued review:
# I read the code again and figured out {{BlocksMap#removeBlock}}; never mind.
# One concern is that a large portion of added logic for {{BlockInfoStriped}}
is around indexing into {{triplets}}. The NN optimization work HDFS-6658 is
likely to change the structure significantly. We should probably start thinking
about it..
# {{FSNamesystem}}: "TODO we need block placement policy for striped block
groups", the JIRA is HDFS-7613
The rest looks good. Thanks again for the good work!
> Erasure Coding: allocate and persist striped blocks in NameNode
> ---------------------------------------------------------------
>
> Key: HDFS-7837
> URL: https://issues.apache.org/jira/browse/HDFS-7837
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-7837.000.patch
>
>
> Try to finish the remaining work from HDFS-7339 (except the
> ClientProtocol/DFSClient part):
> # Allow FSNamesystem#getAdditionalBlock to create striped blocks and persist
> striped blocks to editlog
> # Update FSImage for max allocated striped block ID
> # Update the block commit/complete logic in BlockManager
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