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https://issues.apache.org/jira/browse/HDFS-7672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14527966#comment-14527966
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Zhe Zhang commented on HDFS-7672:
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Thanks for the patch Nicholas. I haven't finished reviewing but some quite
comments:
# We could consistently use {{endBlock}} and {{endedBlock}} (e.g.,
{{putEndBlock}} -> {{putEndedBlock}}, I prefer {{endedBlock}}
# Similarly, maybe {{getLocatedBlock}} should be {{getStripedBlock}}?
# it's a non-trivial decision whether we want to allocate a new block group, or
keep writing with fewer health DNs, and repair later. Maybe we should discuss
the trade-offs here?
> Erasure Coding: handle write failure for stripping coding blocks
> ----------------------------------------------------------------
>
> Key: HDFS-7672
> URL: https://issues.apache.org/jira/browse/HDFS-7672
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: h7672_20150504.patch, h7672_20150504b.patch,
> h7672_20150504c.patch
>
>
> In *stripping* case, for (6, 3)-Reed-Solomon, a client writes to 6 data
> blocks and 3 parity blocks concurrently. We need to handle datanode or
> network failures when writing a EC BlockGroup.
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