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https://issues.apache.org/jira/browse/HBASE-18056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012475#comment-16012475
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Anoop Sam John commented on HBASE-18056:
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Reduction in GC when there are duplicated data right? PE kind of work load
where each of the data is diff key, how come this merge will reduce GC?
> Change CompactingMemStore in BASIC mode to merge multiple segments in pipeline
> ------------------------------------------------------------------------------
>
> Key: HBASE-18056
> URL: https://issues.apache.org/jira/browse/HBASE-18056
> Project: HBase
> Issue Type: Sub-task
> Reporter: Anastasia Braginsky
>
> Under HBASE-16417 it was decided that CompactingMemStore in BASIC mode should
> merge multiple ImmutableSegments in CompactionPipeline. Basic+Merge actually
> demonstrated reduction in GC, alongside improvement in other metrics.
> However, the limit on the number of segments in pipeline is still set to 30.
> Under this JIRA it should be changed to 1, as it was tested under HBASE-16417.
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