Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Date: Sat, 5 Dec 2015 19:42:11 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12917962.1449137008000.280745.1449344531086@Atlassian.JIRA>
In-Reply-To: <JIRA.12917962.1449137008000@Atlassian.JIRA>
References: <JIRA.12917962.1449137008000@Atlassian.JIRA>
 <JIRA.12917962.1449137008691@arcas>
Subject: [jira] [Commented] (HBASE-14922) Delayed flush doesn't work causing
 flush storms.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HBASE-14922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15043484#comment-15043484 ] 

stack commented on HBASE-14922:
-------------------------------

I pushed the [~lhofhansl] fix because the cited exception is causing tests to fail ruining our clean build track record.

https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.2/lastCompletedBuild/jdk=latest1.7,label=Hadoop/testReport/org.apache.hadoop.hbase.procedure/TestProcedureManager/org_apache_hadoop_hbase_procedure_TestProcedureManager/

Fix looks good to me. If it not [~eclark], we can reevaluate later... committing to get blue builds back again.

> 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: 14922-fix.txt, 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.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)