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https://issues.apache.org/jira/browse/HADOOP-9622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated HADOOP-9622:
-------------------------------
Attachment: HADOOP-9622-2.patch
Added a discussion of the various use cases and assumption on how compressed
input streams read blocks to CompressSplitLineReader.
> bzip2 codec can drop records when reading data in splits
> --------------------------------------------------------
>
> Key: HADOOP-9622
> URL: https://issues.apache.org/jira/browse/HADOOP-9622
> Project: Hadoop Common
> Issue Type: Bug
> Components: io
> Affects Versions: 2.0.4-alpha, 0.23.8
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Critical
> Attachments: blockEndingInCRThenLF.txt.bz2, blockEndingInCR.txt.bz2,
> HADOOP-9622-2.patch, HADOOP-9622.patch, HADOOP-9622-testcase.patch
>
>
> Bzip2Codec.BZip2CompressionInputStream can cause records to be dropped when
> reading them in splits based on where record delimiters occur relative to
> compression block boundaries.
> Thanks to [~knoguchi] for discovering this problem while working on PIG-3251.
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