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https://issues.apache.org/jira/browse/HADOOP-12794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravi Mutyala updated HADOOP-12794:
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Release Note: Added New compression levels for GzipCodec that can be set in
zlib.compress.level
Status: Patch Available (was: Open)
New compression levels can be used by setting zlib.compress.level
eg. -D zlib.compress.level=FOUR -D
mapreduce.output.fileoutputformat.compress.codec=org.apache.hadoop.io.compress.GzipCodec
> Support additional compression levels for GzipCodec
> ---------------------------------------------------
>
> Key: HADOOP-12794
> URL: https://issues.apache.org/jira/browse/HADOOP-12794
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 2.7.2
> Reporter: Ravi Mutyala
> Assignee: Ravi Mutyala
> Fix For: 2.7.3
>
>
> gzip supports compression levels 1-9. Compression level 4 seems to give best
> compression per CPU time in some of our tests. Right now ZlibCompressor that
> is used by GzipCodec only supports levels 1,9 and six (default).
> Adding all the compression levels that are supported by native ZlibCompressor
> can provide more options to tweak compression levels.
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