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https://issues.apache.org/jira/browse/HBASE-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247373#comment-13247373
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dhruba borthakur commented on HBASE-5720:
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+1 to this patch.
I think this bug exists in trunk too. Matt, thanks for finding it. Have you
tried this patch in your setup to verify that it fixes the problem for 0.94? If
so, i will submit a patch for trunk too.
> HFileDataBlockEncoderImpl uses wrong header size when reading HFiles with no
> checksums
> --------------------------------------------------------------------------------------
>
> Key: HBASE-5720
> URL: https://issues.apache.org/jira/browse/HBASE-5720
> Project: HBase
> Issue Type: Bug
> Components: io, regionserver
> Affects Versions: 0.94.0
> Reporter: Matt Corgan
> Priority: Blocker
> Fix For: 0.94.0
>
> Attachments: HBASE-5720-v1.patch
>
>
> When reading a .92 HFile without checksums, encoding it, and storing in the
> block cache, the HFileDataBlockEncoderImpl always allocates a dummy header
> appropriate for checksums even though there are none. This corrupts the
> byte[].
> Attaching a patch that allocates a DUMMY_HEADER_NO_CHECKSUM in that case
> which I think is the desired behavior.
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