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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 Wed, 31 Aug 2016 07:43:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15451474#comment-15451474
] 

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

[~anoop.hbase], all explanations correct. One of the goals of this jira is to install some
order in terminology (smile). Correct, we now distinguish between two types of compaction:
index compaction, which only merges the cell arrays but does not actually copy the data, and
data compaction, which also eliminates the redundant versions and copies the remaining data.
We are working on benchmarks (ycsb and PE) to verify that the former is inexpensive, and can
be used as default. Part of these benchmarks is fine-tuning the upper bound for the # of segments
in the pipeline. 

> 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: Anastasia Braginsky
>




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