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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5995) Fix and reenable TestLogRolling.testLogRollOnPipelineRestart
Date Tue, 23 Jul 2013 04:44:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13716044#comment-13716044
] 

stack commented on HBASE-5995:
------------------------------

TestLogRolling.testLogRollOnPipelineRestart failed on hadoop1 here: https://builds.apache.org/job/hbase-0.95/352/consoleText
 It went zombie.

In the double thread dump on the end:

{code}
"pool-1-thread-1" prio=10 tid=0x73f9dc00 nid=0x3a34 in Object.wait() [0x7517d000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0xcf624ad0> (a java.util.concurrent.atomic.AtomicLong)
	at org.apache.hadoop.hbase.client.AsyncProcess.waitForNextTaskDone(AsyncProcess.java:634)
	- locked <0xcf624ad0> (a java.util.concurrent.atomic.AtomicLong)
	at org.apache.hadoop.hbase.client.AsyncProcess.waitForMaximumCurrentTasks(AsyncProcess.java:659)
	at org.apache.hadoop.hbase.client.AsyncProcess.waitUntilDone(AsyncProcess.java:670)
	at org.apache.hadoop.hbase.client.HTable.backgroundFlushCommits(HTable.java:813)
	at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1170)
	at org.apache.hadoop.hbase.client.HTable.put(HTable.java:753)
	at org.apache.hadoop.hbase.regionserver.wal.TestLogRolling.doPut(TestLogRolling.java:640)
	at org.apache.hadoop.hbase.regionserver.wal.TestLogRolling.writeData(TestLogRolling.java:248)
	at org.apache.hadoop.hbase.regionserver.wal.TestLogRolling.testLogRollOnPipelineRestart(TestLogRolling.java:515)
{code}

... we are stuck here.

The math looks like it could go wonky.  But looking in the output for the test, it seems that
when this test ran we got this:

2013-07-23 01:23:29,560 INFO  [pool-1-thread-1] hbase.HBaseTestingUtility(922): Minicluster
is down
2013-07-23 01:23:29,574 INFO  [pool-1-thread-1] hbase.ResourceChecker(171): after: regionserver.wal.TestLogRolling#testLogRollOnPipelineRestart
Thread=39 (was 31) - Thread LEAK? -, OpenFileDescriptor=312 (was 272) - OpenFileDescriptor
LEAK? -, MaxFileDescriptor=40000 (was 40000), SystemLoadAverage=351 (was 368), ProcessCount=144
(was 142) - ProcessCount LEAK? -, AvailableMemoryMB=906 (was 1995), ConnectionCount=0 (was
0)

So we were up against the fd limit.
                
> Fix and reenable TestLogRolling.testLogRollOnPipelineRestart
> ------------------------------------------------------------
>
>                 Key: HBASE-5995
>                 URL: https://issues.apache.org/jira/browse/HBASE-5995
>             Project: HBase
>          Issue Type: Sub-task
>          Components: test
>            Reporter: stack
>            Assignee: Enis Soztutar
>            Priority: Blocker
>             Fix For: 0.98.0, 0.95.1
>
>         Attachments: hbase-5995_v1.patch, hbase-5995_v2.patch, hbase-5995_v3.patch
>
>
> HBASE-5984 disabled this flakey test (See the issue for more).  This issue is about getting
it enabled again.  Made a blocker on 0.96.0 so it gets attention.

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