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From "Rivkin Andrey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6558) multibyte delimiters with compressed input files generate duplicate records
Date Fri, 26 Feb 2016 11:16:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15168833#comment-15168833
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Rivkin Andrey commented on MAPREDUCE-6558:
------------------------------------------

Hi, Just run into this problem. 

Multibyte delimites with *.Bz2 files. 
We are on Hadoop 2.5.0, tried to get LineRecordReader from 2.6.4 - didn't help.
Can you please sugest some workaround or where to look (why this problem occurs?)?

Regards,
Andrey

> 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
>
> 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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