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https://issues.apache.org/jira/browse/ACCUMULO-119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144387#comment-13144387
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Keith Turner commented on ACCUMULO-119:
---------------------------------------
I made some quick and dirty modifications to do some simple performance
testing. With 8 threads writing small mutations to a single tablet server
having group commit made a very noticeable difference. After I make the code
properly handle error conditions and shutdown the background thread, I will
post a patch and some performance numbers. I also need to test the effect on
large batch writes to make sure it does not have a negative impact.
> Implement group commit for write ahead logs
> -------------------------------------------
>
> Key: ACCUMULO-119
> URL: https://issues.apache.org/jira/browse/ACCUMULO-119
> Project: Accumulo
> Issue Type: Improvement
> Components: tserver
> Reporter: Keith Turner
> Assignee: Keith Turner
> Fix For: 1.5.0
>
>
> Currently access to the tablet server write ahead logs is synchronized. It
> may be better if all writes bound for the write ahead log were put on a queue
> and processed by a background thread.
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