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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17575) Towards Making BASIC the Default In-Memory Compaction Policy
Date Thu, 02 Feb 2017 05:53:51 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15849478#comment-15849478
] 

Anoop Sam John commented on HBASE-17575:
----------------------------------------

Did u do a performance test comparing NONE vs BASIC using PE tool (Where it is not a duplicated
cells case)..  We are doing these tests extensively these days.  (With off heaping enabled
also)  Could not see much improve wrt throughput.  Though the GC was looking much better with
BASIC..  Will do more tests..    Just asking whether u have any such readings
cc [~ram_krish]

> Towards Making BASIC the Default In-Memory Compaction Policy
> ------------------------------------------------------------
>
>                 Key: HBASE-17575
>                 URL: https://issues.apache.org/jira/browse/HBASE-17575
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Eshcar Hillel
>            Assignee: Eshcar Hillel
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17575-V01.patch, HBASE-17575-V01.patch
>
>
> In preparation for switching the default in-memory compaction policy to BASIC, we would
like to make sure that once we do the switch all tests will run (and pass!) with the new default
policy.
> To this end, we remove the NONE configuration setting added to tests in HBASE-17294 and
HBASE-17316.
> We verified these tests pass with all 3 memory compaction policies.
> For each test 
> (1) if all 3 policies pass the test -- we remove the configuration from the test.
> (2) if some fail we add tests of all 3 configurations, e.g., by parameterized tests.
When needed we update expected results.
> One test failure identified a small bug which is also fixed in the patch.



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