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https://issues.apache.org/jira/browse/HBASE-15545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16804097#comment-16804097
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Eiichi Sato commented on HBASE-15545:
-------------------------------------
This is a picture comparing GC activities before and after these patches are
applied. Note that the green RegionServer in this picture is always with these
patches applied. We wanted to test these patches on a small number of servers
first.
!image-2019-03-29-01-20-56-863.png!
> org.apache.hadoop.io.compress.DecompressorStream allocates too much memory
> --------------------------------------------------------------------------
>
> Key: HBASE-15545
> URL: https://issues.apache.org/jira/browse/HBASE-15545
> Project: HBase
> Issue Type: Sub-task
> Components: Compaction
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Major
> Attachments: image-2019-03-29-01-20-56-863.png
>
>
> It accounts for ~ 11% of overall memory allocation during compaction when
> compression (GZ) is enabled.
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