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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MAPREDUCE-1649) Compressed files with TextInputFormat does not work with CombineFileInputFormat
Date Tue, 07 Sep 2010 11:33:33 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu resolved MAPREDUCE-1649.
------------------------------------------------

    Resolution: Invalid

Resolving this as MAPREDUCE-1597 fixes compressed files in CombineFileInputFormat.

> Compressed files with TextInputFormat does not work with CombineFileInputFormat
> -------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1649
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1649
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: MAPREDUCE-1649.1.branch-0.20.patch
>
>
> {{CombineFileInputFormat}} creates splits based on blocks, regardless whether the underlying
{{FileInputFormat}} is splittable or not..
> This means that we can have 2 or more splits for a compressed text file with {{TextInputFormat}}.
For each of these splits, {{TextInputFormat.getRecordReader}} will return a {{RecordReader}}
for the whole compressed file, thus causing duplicate input data.

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