Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Date: Sat, 10 Sep 2011 04:39:10 +0000 (UTC)
From: "Ted Yu (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: 
 <1191082109.12681.1315629550769.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <796832720.23242.1315362430068.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (HBASE-4340) Hbase can't balance if
 ServerShutdownHandler encountered exception
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HBASE-4340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13101971#comment-13101971 ] 

Ted Yu commented on HBASE-4340:
-------------------------------

Patch for TRUNK has been integrated.
Original patch integrated to 0.90 branch.

Thanks for the patch Jinchao.

> Hbase can't balance if ServerShutdownHandler encountered exception
> ------------------------------------------------------------------
>
>                 Key: HBASE-4340
>                 URL: https://issues.apache.org/jira/browse/HBASE-4340
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.4
>            Reporter: gaojinchao
>            Assignee: gaojinchao
>             Fix For: 0.90.5
>
>         Attachments: HBASE-4340_branch90.patch
>
>
> Version: 0.90.4
> Cluster : 40 boxes
> As I saw below logs. It said that balance couldn't work because of a dead RS.
> I dug deeply and found two issues:
> 1.       shutdownhandler didn't clear numProcessing deal with some exceptions. It seems whatever exceptions we should clear the flag or close master.
> 2.       "dead regionserver(s): [158-1-130-12,20020,1314971097929]" is inaccurate. The dead sever should be " 158-1-130-10,20020,1315068597979"
> //master logs:
> 2011-09-05 00:28:00,487 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:33:00,489 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:38:00,493 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:43:00,495 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:48:00,499 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:53:00,501 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 00:58:00,501 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:03:00,502 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:08:00,506 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:13:00,508 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:18:00,512 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:23:00,514 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:28:00,518 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:33:00,520 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:38:00,524 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:43:00,526 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:48:00,530 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:53:00,532 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 01:58:00,536 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 02:03:00,537 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 02:08:00,538 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 02:13:00,539 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> 2011-09-05 02:18:00,543 DEBUG org.apache.hadoop.hbase.master.HMaster: Not running balancer because processing dead regionserver(s): [158-1-130-12,20020,1314971097929]
> // the exception logs :.
> 2011-09-03 18:13:27,550 DEBUG org.apache.hadoop.hbase.master.AssignmentManager: Handling transition=RS_ZK_REGION_OPENING, server=158-1-133-11,20020,1315069437236, region=0db4088d75c58dd22f93f389d90ba6cc
> 2011-09-03 18:13:27,550 ERROR org.apache.hadoop.hbase.executor.EventHandler: Caught throwable while processing event M_SERVER_SHUTDOWN java.lang.NullPointerException
>          at org.apache.hadoop.hbase.util.Bytes.toLong(Bytes.java:480)
>          at org.apache.hadoop.hbase.util.Bytes.toLong(Bytes.java:454)
>          at org.apache.hadoop.hbase.catalog.MetaReader.metaRowToRegionPairWithInfo(MetaReader.java:400)
>          at org.apache.hadoop.hbase.catalog.MetaReader.getServerUserRegions(MetaReader.java:591)
>          at org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:176)
>          at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:156)
>          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>          at java.lang.Thread.run(Thread.java:662)
> 2011-09-03 18:13:27,550 INFO org.apache.hadoop.hbase.master.handler.ServerShutdownHandler: Splitting logs for 158-1-134-15,20020,1315065238916
> 2011-09-03 18:13:27,566 DEBUG org.apache.hadoop.hbase.master.AssignmentManager: No previous transition plan was found (or we are ignoring an existing plan) for ufdr,001146,1314955304624.22f6d43e78c903196f206881fc149488. so generated a random one; hri=ufdr,001146,1314955304624.22f6d43e78c903196f206881fc149488., src=, dest=158-1-132-17,20020,1315069441916; 31 (online=31, exclude=null) available servers
> 201

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira