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https://issues.apache.org/jira/browse/HBASE-3417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009449#comment-13009449
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Jonathan Gray commented on HBASE-3417:
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Just verified that this is the same as what we have been running with in
production (since the patch was put up in January).
I'm ready to commit if you want to +1 me :)
> CacheOnWrite is using the temporary output path for block names, need to use
> a more consistent block naming scheme
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-3417
> URL: https://issues.apache.org/jira/browse/HBASE-3417
> Project: HBase
> Issue Type: Bug
> Components: io, regionserver
> Affects Versions: 0.92.0
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Priority: Critical
> Fix For: 0.92.0
>
> Attachments: HBASE-3417-v1.patch, HBASE-3417-v2.patch,
> HBASE-3417-v5.patch
>
>
> Currently the block names used in the block cache are built using the
> filesystem path. However, for cache on write, the path is a temporary output
> file.
> The original COW patch actually made some modifications to block naming stuff
> to make it more consistent but did not do enough. Should add a separate
> method somewhere for generating block names using some more easily mocked
> scheme (rather than just raw path as we generate a random unique file name
> twice, once for tmp and then again when moved into place).
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