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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5720) HFileDataBlockEncoderImpl uses wrong header size when reading HFiles with no checksums
Date Thu, 05 Apr 2012 18:42:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247501#comment-13247501
] 

Hadoop QA commented on HBASE-5720:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12521547/HBASE-5720-v2.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 patch.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1408//console

This message is automatically generated.
                
> 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, HBASE-5720-v2.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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