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https://issues.apache.org/jira/browse/HBASE-13412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482514#comment-14482514
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Hadoop QA commented on HBASE-13412:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12723505/HBASE-13412-v2.patch
against master branch at commit 8c740f43093671cfd4cc2b1052d8556e0d492c13.
ATTACHMENT ID: 12723505
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 4 new
or modified tests.
{color:green}+1 hadoop versions{color}. The patch compiles with all
supported hadoop versions (2.4.1 2.5.2 2.6.0)
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 protoc{color}. The applied patch does not increase the
total number of protoc compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:red}-1 checkstyle{color}. The applied patch generated
1922 checkstyle errors (more than the master's current 1921 errors).
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 2.0.3) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 lineLengths{color}. The patch does not introduce lines
longer than 100
{color:green}+1 site{color}. The mvn site goal succeeds with this patch.
{color:green}+1 core tests{color}. The patch passed unit tests in .
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/13589//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/13589//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/13589//artifact/patchprocess/checkstyle-aggregate.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/13589//console
This message is automatically generated.
> 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.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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