[
https://issues.apache.org/jira/browse/ACCUMULO-140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148915#comment-13148915
]
Todd Lipcon commented on ACCUMULO-140:
--------------------------------------
The current HDFS support (HDFS-2465) doesn't expose hinting as a client API --
it's a DN-wide setting. The plan is to later add some kind of hint flag to the
protocol so you could push down the hint from the client.
> 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
