Suguru Namura created CASSANDRA-4578:
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Summary: 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}
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