[
https://issues.apache.org/jira/browse/HBASE-4463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151846#comment-13151846
]
Lars Hofhansl commented on HBASE-4463:
--------------------------------------
re: previous discussions. Automatically detecting a good time to perform more
aggressive compactions would be nice; my vote would be to let's get this
simpler time-based scheme in first.
@Ted: Isn't hour-granularity good enough?
> Run more aggressive compactions during off peak hours
> -----------------------------------------------------
>
> Key: HBASE-4463
> URL: https://issues.apache.org/jira/browse/HBASE-4463
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Karthik Ranganathan
> Assignee: Karthik Ranganathan
> Attachments: HBASE-4463.D471.1.patch
>
>
> The number of iops on the disk and the top of the rack bandwidth utilization
> at off peak hours is much lower than at peak hours depending on the
> application usage pattern. We can utilize this knowledge to improve the
> performance of the HBase cluster by increasing the compact selection ratio to
> a much larger value during off-peak hours than otherwise - increasing
> hbase.hstore.compaction.ratio (1.2 default) to
> hbase.hstore.compaction.ratio.offpeak (5 default). This will help reduce the
> average number of files per store.
--
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
