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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17765) Reviving the merge possibility in the CompactingMemStore
Date Tue, 28 Mar 2017 19:50:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15945809#comment-15945809
] 

Hudson commented on HBASE-17765:
--------------------------------

FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #2756 (See [https://builds.apache.org/job/HBase-Trunk_matrix/2756/])
HBASE-17765 Reviving the merge of the compacting pipeline (busbey: rev cb4fac1d18660094908afd6abaace6e441ec6a49)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactingMemStore.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestWalAndCompactingMemStoreFlush.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ImmutableSegment.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactionPipeline.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.java


> Reviving the merge possibility in the CompactingMemStore
> --------------------------------------------------------
>
>                 Key: HBASE-17765
>                 URL: https://issues.apache.org/jira/browse/HBASE-17765
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Anastasia Braginsky
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17765-V01.patch, HBASE-17765-V02.patch, HBASE-17765-V03.patch,
HBASE-17765-V04.patch, HBASE-17765-V05.patch
>
>
> According to the new performance results presented in the HBASE-16417 we see that the
read latency of the 90th percentile of the BASIC policy is too big due to the need to traverse
through too many segments in the pipeline. In this JIRA we correct the bug in the merge sizing
calculations and allow pipeline size threshold to be a configurable parameter.



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