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https://issues.apache.org/jira/browse/HBASE-13412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482652#comment-14482652
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Elliott Clark commented on HBASE-13412:
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bq.Having regions split at different sizes is going to confuse operators?
Since regions split on the size of a single store file it's already pretty hard
to tell exactly when a region will split. So I don't think that adding a little
more uncertainty around the timing of an already background process is too
awful. Though it is configurable if someone would ever want to turn it off.
> Region split decisions should have jitter
> -----------------------------------------
>
> Key: HBASE-13412
> URL: https://issues.apache.org/jira/browse/HBASE-13412
> Project: HBase
> Issue Type: New Feature
> Components: regionserver
> Affects Versions: 1.0.0, 2.0.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 2.0.0, 1.1.0
>
> Attachments: HBASE-13412-v1.patch, HBASE-13412-v2.patch,
> HBASE-13412-v3.patch, HBASE-13412.patch
>
>
> Whenever a region splits it causes lots of IO (compactions are queued for a
> while). Because of this it's important to make sure that well distributed
> tables don't have all of their regions split at exactly the same time.
> This is basically the same as our compaction jitter.
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