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https://issues.apache.org/jira/browse/MAPREDUCE-228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984227#action_12984227
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Lianhui Wang commented on MAPREDUCE-228:
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i agree with arkady borkovsky. let the FileInputFormat.getSplits(JobConf, int)
to choose the compressed InputFormat accord to the filename.
for example:LzoTextInputFormat or ZipTextInputFormat.
but now the FileInputFormat cannot support it.
> want InputFormat and OutputFormat for zip archives
> --------------------------------------------------
>
> Key: MAPREDUCE-228
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-228
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Doug Cutting
>
> An InputFormat and OutputFormat for zip-format archives would be useful. It
> would provide a standard file format, friendly to foreign applications (e.g.,
> streaming), that is also optimized for Hadoop.
> The OutputFormat could generate archives containing a series of small (~1MB)
> files, each individually compressed. The InputFormat could then generate a
> split for each file in the archive. (Zip archives contain a directory at the
> end of the file that may be efficiently read when constructing splits.)
> Input splits could thus be sent to a node where they are stored locally for
> the map phase, providing good performance.
> This would thus permit applications to (1) use a standard file format; (2)
> keep data compressed; and (3) efficiently split input into chunks
> substantially smaller than HDFS blocks. This is not available today.
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