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https://issues.apache.org/jira/browse/HADOOP-18788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18031002#comment-18031002
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ASF GitHub Bot commented on HADOOP-18788:
-----------------------------------------
github-actions[bot] closed pull request #5799: HADOOP-18788: Support lz4
highCompressor level.
URL: https://github.com/apache/hadoop/pull/5799
> Support LZ4 compressionLevel
> ----------------------------
>
> Key: HADOOP-18788
> URL: https://issues.apache.org/jira/browse/HADOOP-18788
> Project: Hadoop Common
> Issue Type: New Feature
> Components: common
> Reporter: wenweijian
> Priority: Minor
> Labels: pull-request-available
>
> The Hadoop's LZ4 compression codec now depends on lz4-java. There two type of
> compressor in lz4, `fastCompressor` and `highCompressor`. The default lz4
> compressor in hadoop is fastCompressor, we also can use highCompressor by
> using config `IO_COMPRESSION_CODEC_LZ4_USELZ4HC_DEFAULT`
>
> When we want to use highCompressor in hadoop, we only can use the default
> compression level, which is level 9. while highCompressor in lz4-java
> supports compression level from 1 to 17.
>
> I think we can set a configuration to let users to choose different
> compresssionLevel for lz4 highCompressor.
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