You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by "Suguru Namura (JIRA)" <ji...@apache.org> on 2012/08/27 06:47:08 UTC
[jira] [Updated] (CASSANDRA-4578) Dead lock in mutation stage when
many concurrent writes to few columns
[ https://issues.apache.org/jira/browse/CASSANDRA-4578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Suguru Namura updated CASSANDRA-4578:
-------------------------------------
Attachment: threaddump-1344957574788.tdump
Attached thread dump
> Dead lock in mutation stage when many concurrent writes to few columns
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-4578
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4578
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.3
> Environment: 15 cassandra instances
> CentOS5
> 8 Core 64GB Memory
> java version "1.6.0_33"
> Java(TM) SE Runtime Environment (build 1.6.0_33-b04)
> Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03, mixed mode)
> Reporter: Suguru Namura
> Attachments: threaddump-1344957574788.tdump
>
>
> When I send many request to increment counters to few counter columns, sometimes mutation stage cause dead lock. When it happened, all of mutation threads are locked and do not accept updates any more.
> {noformat}
> "MutationStage:432" - Thread t@1389
> java.lang.Thread.State: TIMED_WAITING
> at java.lang.Object.wait(Native Method)
> - waiting on <b90b45b> (a org.apache.cassandra.utils.SimpleCondition)
> at java.lang.Object.wait(Object.java:443)
> at java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:292)
> at org.apache.cassandra.utils.SimpleCondition.await(SimpleCondition.java:54)
> at org.apache.cassandra.service.AbstractWriteResponseHandler.get(AbstractWriteResponseHandler.java:55)
> at org.apache.cassandra.db.CounterMutationVerbHandler.doVerb(CounterMutationVerbHandler.java:51)
> at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59)
> 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)
> Locked ownable synchronizers:
> - locked <4b1b0a6f> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> {noformat}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira