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https://issues.apache.org/jira/browse/ZOOKEEPER-344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683158#action_12683158
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Mahadev konar edited comment on ZOOKEEPER-344 at 3/18/09 2:16 PM:
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{noformat}
ERROR [main-EventThread]
com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
New state: Expired :
zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1160/locknode
ERROR [main-EventThread]
com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
New state: Expired :
zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1356/locknode
{noformat}
can you post corresponding session id's with these ?
and also the logs related to their session closing with the timestamps.
was (Author: mahadev):
{noformat}
ERROR [main-EventThread]
com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
New state: Expired :
zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1160/locknode
ERROR [main-EventThread]
com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
New state: Expired :
zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1356/locknode
{noformat}
can you post corresponding session id's with these?
> doIO in NioServerCnxn: Exception causing close of session : cause is "read
> error"
> ---------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-344
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-344
> Project: Zookeeper
> Issue Type: Bug
> Components: java client
> Affects Versions: 3.1.0
> Environment: jdk1.6.0_07
> Linux blade2 2.6.27.7-134.fc10.x86_64 #1 SMP Mon Dec 1 22:21:35 EST 2008
> x86_64 x86_64 x86_64 GNU/Linux
> Reporter: bryan thompson
>
> I have been having a problem with zookeeper 3.0.1 and now with 3.1.0 where I
> see a lot of expired sessions. I am using a 16 node cluster which is all on
> the same local network. There is a single zookeeper instance (these are
> benchmarking runs).
> The problem appears to be correlated with either run time or system load.\
> Personally I think that it is system load because I have session session
> expired events under a Windows platform running zookeeper and the application
> (i.e., everthing is local) when the application load suddenly spikes. To me
> this suggests that the client is not able to renew (ping) the zookeeper
> service in a timely manner and is expired. But the log messages below with
> the "read error" suggest that maybe there is something else going on?
> Zookeeper Configuration
> #Wed Mar 18 12:41:05 GMT-05:00 2009
> clientPort=2181
> dataDir=/var/bigdata/benchmark/zookeeper/1
> syncLimit=2
> dataLogDir=/var/bigdata/benchmark/zookeeper/1
> tickTime=2000
> Some representative log messages are below.
> Client side messages (from our app)
> ERROR [main-EventThread]
> com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
> 2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
> New state: Expired :
> zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1160/locknode
> ERROR [main-EventThread]
> com.bigdata.zookeeper.ZLockImpl$ZLockWatcher.process(ZLockImpl.java:400)
> 2009-03-18 13:35:40,335 - Session expired: WatchedEvent: Server state change.
> New state: Expired :
> zpath=/benchmark/jobs/com.bigdata.service.jini.benchmark.ThroughputMaster/test_1/client1356/locknode
> Server side messages:
> WARN [NIOServerCxn.Factory:2181]
> org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:417)
> 2009-03-18 13:06:57,252 - Exception causing close of session
> 0x1201aac14300022 due to java.io.IOException: Read error
> WARN [NIOServerCxn.Factory:2181]
> org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:417)
> 2009-03-18 13:06:58,198 - Exception causing close of session
> 0x1201aac1430000f due to java.io.IOException: Read error
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