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https://issues.apache.org/jira/browse/MAPREDUCE-6558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283419#comment-15283419
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Wilfred Spiegelenburg commented on MAPREDUCE-6558:
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I somehow could not leave a comment yesterday. I made the .3 patch to fix some
comments in the test code and decrease the size of the test file even further.
Thank you for the review and the commit [~jlowe]
> multibyte delimiters with compressed input files generate duplicate records
> ---------------------------------------------------------------------------
>
> Key: MAPREDUCE-6558
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6558
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv1, mrv2
> Affects Versions: 2.7.2
> Reporter: Wilfred Spiegelenburg
> Assignee: Wilfred Spiegelenburg
> Fix For: 2.8.0, 2.7.3, 2.6.5
>
> Attachments: MAPREDUCE-6558.1.patch, MAPREDUCE-6558.2.patch,
> MAPREDUCE-6558.3.patch
>
>
> This is the follow up for MAPREDUCE-6549. Compressed files cause record
> duplications as shown in different junit tests. The number of duplicated
> records changes with the splitsize:
> Unexpected number of records in split (splitsize = 10)
> Expected: 41051
> Actual: 45062
> Unexpected number of records in split (splitsize = 100000)
> Expected: 41051
> Actual: 41052
> Test passes with splitsize = 147445 which is the compressed file length.The
> file is a bzip2 file with 100k blocks and a total of 11 blocks
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