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https://issues.apache.org/jira/browse/HADOOP-1823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12579545#action_12579545
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lohit vijayarenu commented on HADOOP-1823:
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I was able to use this bzip2.jar with streaming. This would be a very useful
addition.
> want InputFormat for bzip2 files
> --------------------------------
>
> Key: HADOOP-1823
> URL: https://issues.apache.org/jira/browse/HADOOP-1823
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Doug Cutting
> Attachments: bzip2.jar
>
>
> Unlike gzip, the bzip file format supports splitting. Compression is by
> blocks (900k by default) and blocks are separated by a synchronization marker
> (a 48-bit approximation of Pi). This would permit very large compressed
> files to be split into multiple map tasks, which is not currently possible
> unless using a Hadoop-specific file format.
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