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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17071) Do not initialize MemstoreChunkPool when use mslab option is turned off
Date Mon, 14 Nov 2016 21:10:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15665028#comment-15665028
] 

Hudson commented on HBASE-17071:
--------------------------------

ABORTED: Integrated in Jenkins build HBase-Trunk_matrix #1945 (See [https://builds.apache.org/job/HBase-Trunk_matrix/1945/])
HBASE-17071 Do not initialize MemstoreChunkPool when use mslab option is (anoopsamjohn: rev
fa838b020df0235e9bea448730b3bd034e9bfb65)
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemStoreChunkPool.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreChunkPool.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreLAB.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCellFlatSet.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SegmentFactory.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java


> Do not initialize MemstoreChunkPool when use mslab option is turned off
> -----------------------------------------------------------------------
>
>                 Key: HBASE-17071
>                 URL: https://issues.apache.org/jira/browse/HBASE-17071
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17071.patch
>
>
> This is a 2.0 only issue and induced by HBASE-16407. 
> We are initializing MSLAB chunk pool along with RS start itself now. (To pass it as a
HeapMemoryTuneObserver).
> When MSLAB is turned off  (ie. hbase.hregion.memstore.mslab.enabled is configured false)
we should not be initializing MSLAB chunk pool at all.  By default the initial chunk count
to be created will be 0 only.  Still better to avoid.



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