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https://issues.apache.org/jira/browse/HBASE-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13249425#comment-13249425
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stack commented on HBASE-5720:
------------------------------
@Matt I think you are making a new argument, number #4 I believe, for why we
should do HBASE-4336.
> 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: 5720-trunk-v2.txt, 5720-trunk.txt, 5720v4.txt,
> 5720v4.txt, 5720v4.txt, HBASE-5720-v1.patch, HBASE-5720-v2.patch,
> HBASE-5720-v3.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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