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https://issues.apache.org/jira/browse/ACCUMULO-140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148894#comment-13148894
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Keith Turner commented on ACCUMULO-140:
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See HDFS-2465 and HADOOP-7714
> Prevent linux from caching write ahead log files
> ------------------------------------------------
>
> Key: ACCUMULO-140
> URL: https://issues.apache.org/jira/browse/ACCUMULO-140
> Project: Accumulo
> Issue Type: Improvement
> Components: logger
> Reporter: Keith Turner
> Assignee: Eric Newton
>
> While at ApacheCon I attended a talk about Cassandra. The developer
> mentioned using posix_fadvise to prevent linux from storing edit/write ahead
> log data in the page cache. This sounds great. Accumulo can do this for its
> write ahead logs.
> Using posix_fadvise was also mentioned for compactions, this is something
> Accumulo can not do because its compactions read and write to hdfs.
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