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From "Edward Bortnikov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16417) In-Memory MemStore Policy for Flattening and Compactions
Date Sun, 19 Mar 2017 08:47:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15931616#comment-15931616
] 

Edward Bortnikov commented on HBASE-16417:
------------------------------------------

[~eshcar], thanks for the thorough report, great stuff.

Question to all - do these results suggest that we change the default to BASIC+MERGE? Seems
that this method does not have any material overhead, even under the uniform workload. If
the answer is "yes", we could take one of two ways: (1) say that BASIC+MERGE is a new BASIC
(my favorite :)), or (2) introduce a new compaction level (MODERATE?). Let's converge fast
- then we can update the documentation and finalize the code. 

This work notwithstanding, it is still appealing to come up with an automatic policy to tune
handsfree (which was the original intent behind this JIRA). With the 2.0 release on our heels,
we might not be able to make it until then. But let's have all the building blocks in place,
at least (smile).  

> In-Memory MemStore Policy for Flattening and Compactions
> --------------------------------------------------------
>
>                 Key: HBASE-16417
>                 URL: https://issues.apache.org/jira/browse/HBASE-16417
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Eshcar Hillel
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16417-benchmarkresults-20161101.pdf, HBASE-16417-benchmarkresults-20161110.pdf,
HBASE-16417-benchmarkresults-20161123.pdf, HBASE-16417-benchmarkresults-20161205.pdf, HBASE-16417-benchmarkresults-20170309.pdf,
HBASE-16417-benchmarkresults-20170317.pdf
>
>




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