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Date: Thu, 11 Oct 2012 18:13:03 +0000 (UTC)
From: "Jimmy Xiang (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <996845857.32442.1349979183654.JavaMail.jiratomcat@arcas>
In-Reply-To: <1272110056.4290.1349489402833.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (HBASE-6958) TestAssignmentManager sometimes
 fails in trunk
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    [ https://issues.apache.org/jira/browse/HBASE-6958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474386#comment-13474386 ] 

Jimmy Xiang commented on HBASE-6958:
------------------------------------

With the patch(v4) for HBASE-6611, I ran the test 20+ times and didn't see the issue. Here is my env:

Apache Maven 3.0.3 (r1075438; 2011-02-28 09:31:09-0800)
Maven home: /etc/vendor/apache-maven-3.0.3
Java version: 1.7.0_07, vendor: Oracle Corporation
Java home: /etc/vendor/jdk1.7.0_07/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.0.0-14-generic", arch: "amd64", family: "unix"

Here is the command I used:

mvn -DcompileSource=1.7 -PlocalTests clean test -Dtest=TestAssignmentManager

                
> TestAssignmentManager sometimes fails in trunk
> ----------------------------------------------
>
>                 Key: HBASE-6958
>                 URL: https://issues.apache.org/jira/browse/HBASE-6958
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>             Fix For: 0.96.0
>
>
> From https://builds.apache.org/job/HBase-TRUNK/3432/testReport/junit/org.apache.hadoop.hbase.master/TestAssignmentManager/testBalanceOnMasterFailoverScenarioWithOpenedNode/ :
> {code}
> Stacktrace
> java.lang.Exception: test timed out after 5000 milliseconds
> 	at java.lang.System.arraycopy(Native Method)
> 	at java.lang.ThreadGroup.remove(ThreadGroup.java:969)
> 	at java.lang.ThreadGroup.threadTerminated(ThreadGroup.java:942)
> 	at java.lang.Thread.exit(Thread.java:732)
> ...
> 2012-10-06 00:46:12,521 DEBUG [MASTER_CLOSE_REGION-mockedAMExecutor-0] zookeeper.ZKUtil(1141): mockedServer-0x13a33892de7000e Retrieved 81 byte(s) of data from znode /hbase/unassigned/dc01abf9cd7fd0ea256af4df02811640 and set watcher; region=t,,1349484359011.dc01abf9cd7fd0ea256af4df02811640., state=M_ZK_REGION_OFFLINE, servername=master,1,1, createTime=1349484372509, payload.length=0
> 2012-10-06 00:46:12,522 ERROR [MASTER_CLOSE_REGION-mockedAMExecutor-0] executor.EventHandler(205): Caught throwable while processing event RS_ZK_REGION_CLOSED
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.master.TestAssignmentManager$MockedLoadBalancer.randomAssignment(TestAssignmentManager.java:773)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.getRegionPlan(AssignmentManager.java:1709)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.getRegionPlan(AssignmentManager.java:1666)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1435)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1155)
> 	at org.apache.hadoop.hbase.master.TestAssignmentManager$AssignmentManagerWithExtrasForTesting.assign(TestAssignmentManager.java:1035)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1130)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1125)
> 	at org.apache.hadoop.hbase.master.handler.ClosedRegionHandler.process(ClosedRegionHandler.java:106)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:202)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> 	at java.lang.Thread.run(Thread.java:722)
> 2012-10-06 00:46:12,522 DEBUG [pool-1-thread-1-EventThread] master.AssignmentManager(670): Handling transition=M_ZK_REGION_OFFLINE, server=master,1,1, region=dc01abf9cd7fd0ea256af4df02811640, current state from region state map ={t,,1349484359011.dc01abf9cd7fd0ea256af4df02811640. state=OFFLINE, ts=1349484372508, server=null}
> {code}
> Looks like NPE happened on this line:
> {code}
>       this.gate.set(true);
> {code}

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