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https://issues.apache.org/jira/browse/HBASE-14922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15039523#comment-15039523
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Hadoop QA commented on HBASE-14922:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12775684/HBASE-14922-v2.patch
against master branch at commit 7117a2e35d42ef4e3f17b0a8f891fc5200cd0890.
ATTACHMENT ID: 12775684
{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 (2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.6.1 2.7.0
2.7.1)
{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
new checkstyle errors. Check build console for list of new 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 post-site goal succeeds with this
patch.
{color:green}+1 core tests{color}. The patch passed unit tests in .
{color:green}+1 zombies{color}. No zombie tests found running at the end of
the build.
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/16762//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/16762//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/16762//artifact/patchprocess/checkstyle-aggregate.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/16762//console
This message is automatically generated.
> Delayed flush doesn't work causing flush storms.
> ------------------------------------------------
>
> Key: HBASE-14922
> URL: https://issues.apache.org/jira/browse/HBASE-14922
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 2.0.0, 1.2.0, 1.1.2
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: HBASE-14922-v1.patch, HBASE-14922-v2.patch,
> HBASE-14922.patch
>
>
> Starting all regionservers at the same time will mean that most
> PeriodicMemstoreFlusher's will be running at the same time. So all of these
> threads will queue flushes at about the same time.
> This was supposed to be mitigated by Delayed. However that isn't nearly
> enough. This results in the immediate filling up and then draining of the
> flush queues every hour.
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