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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13412) Region split decisions should have jitter
Date Tue, 07 Apr 2015 00:34:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482290#comment-14482290
] 

stack commented on HBASE-13412:
-------------------------------

bq. stack Not a fan of ThreadLocals. These tend to hang around. You concerned about the overhead
of creating one?

This suggestion is a mistake on my part. I misunderstood. Please ignore.

> 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.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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