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Posted to issues@hbase.apache.org by "Jonathan Hsieh (JIRA)" <ji...@apache.org> on 2015/04/08 20:36:14 UTC
[jira] [Comment Edited] (HBASE-13412) Region split decisions should
have jitter
[ https://issues.apache.org/jira/browse/HBASE-13412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485755#comment-14485755 ]
Jonathan Hsieh edited comment on HBASE-13412 at 4/8/15 6:35 PM:
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hey [~eclark] -- this patch may have made trunk flakey. 3 of the last 4 last the jenkins builds [1] [2] [3] hitting TestRegionSplitPolicy.testIncreasingToupperBoundRegionSplitPolicy failures.
I've run local and it is flakey, and after reverting locally it seems to pass consistently.
[1] https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6356/testReport/
[2]https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6357/testReport/
[3]https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6358/testReport/
was (Author: jmhsieh):
hey [~eclark] -- this patch may have made trunk flakey. 3 of the last 4 last the jenkins builds [1] [2] [3] hitting TestRegionSplitPolicy.testIncreasingToupperBoundRegionSplitPolicy failures.
I've run local and it is flakey, and after reverting it seems to pass consistently.
[1] https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6356/testReport/
[2]https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6357/testReport/
[3]https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/6358/testReport/
> 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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