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https://issues.apache.org/jira/browse/HBASE-16417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15888755#comment-15888755
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Eshcar Hillel commented on HBASE-16417:
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I am running YCSB, size of values is set to 100B.
I checked and there is no double logging, so this is the correct data size
written to WAL.
>From inspecting the number of entries in each WAL file it turns out that each
>entry takes ~200B. It could be that the size of the metadata per entry is
>~100B, so when the values are big this is insignificant but with small value
>the amplification is significant.
> 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
>
>
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