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https://issues.apache.org/jira/browse/GIRAPH-53?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127702#comment-13127702
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Avery Ching commented on GIRAPH-53:
-----------------------------------
Also, I wonder if it's related to the counter issues, see
https://issues.apache.org/jira/browse/GIRAPH-52. You can try to disable the
superstep counters with the job option "-Dgiraph.useSuperstepCounters=false",
then see if the problem still occurs.
> Unable to read additional data from server session, likely server has closed
> socket
> -----------------------------------------------------------------------------------
>
> Key: GIRAPH-53
> URL: https://issues.apache.org/jira/browse/GIRAPH-53
> Project: Giraph
> Issue Type: Bug
> Reporter: locker
>
> I've got an error recently. Every thing goes well till it comes to the 103rd
> superstep.
> 2011-10-14 16:23:38,904 INFO org.apache.giraph.comm.BasicRPCCommunications:
> prepareSuperstep
> 2011-10-14 16:23:39,018 WARN org.apache.giraph.graph.BspService: process:
> Unknown and unprocessed event
> (path=/_hadoopBsp/job_201110141621_0001/_applicationAttemptsDir/0/_superstepDir/101/_vertexRangeAssignments,
> type=NodeDeleted, state=SyncConnected)
> 2011-10-14 16:23:39,057 INFO org.apache.giraph.graph.BspServiceWorker:
> registerHealth: Created my health node for attempt=0, superstep=103 with
> /_hadoopBsp/job_201110141621_0001/_applicationAttemptsDir/0/_superstepDir/103/_workerHealthyDir/locker-desktop_1
> and hostnamePort = ["locker-desktop",30001]
> 2011-10-14 16:23:39,057 WARN org.apache.giraph.graph.BspService: process:
> Unknown and unprocessed event
> (path=/_hadoopBsp/job_201110141621_0001/_applicationAttemptsDir/0/_superstepDir/101/_superstepFinished,
> type=NodeDeleted, state=SyncConnected)
> 2011-10-14 16:23:39,529 INFO org.apache.zookeeper.ClientCnxn: Unable to read
> additional data from server sessionid 0x1330186cff30001, likely server has
> closed socket, closing socket connection and attempting reconnect
> 2011-10-14 16:23:39,630 ERROR org.apache.zookeeper.ClientCnxn: Error while
> calling watcher
> java.lang.RuntimeException: process: Disconnected from ZooKeeper, cannot
> recover.
> at org.apache.giraph.graph.BspService.process(BspService.java:995)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:488)
> 2011-10-14 16:23:41,098 INFO org.apache.zookeeper.ClientCnxn: Opening socket
> connection to server locker-desktop/10.13.30.90:22181
> 2011-10-14 16:23:41,099 WARN org.apache.zookeeper.ClientCnxn: Session
> 0x1330186cff30001 for server null, unexpected error, closing socket
> connection and attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1078)
> 2011-10-14 16:23:41,212 INFO org.apache.hadoop.mapred.TaskLogsTruncater:
> Initializing logs' truncater with mapRetainSize=-1 and reduceRetainSize=-1
> 2011-10-14 16:23:41,306 INFO org.apache.hadoop.io.nativeio.NativeIO:
> Initialized cache for UID to User mapping with a cache timeout of 14400
> seconds.
> 2011-10-14 16:23:41,307 INFO org.apache.hadoop.io.nativeio.NativeIO: Got
> UserName dic for UID 1001 from the native implementation
> 2011-10-14 16:23:41,318 WARN org.apache.hadoop.mapred.Child: Error running
> child
> java.lang.RuntimeException:
> org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode
> = ConnectionLoss for
> /_hadoopBsp/job_201110141621_0001/_applicationAttemptsDir/0/_superstepDir/103/_vertexRangeAssignments
> at
> org.apache.giraph.graph.BspServiceWorker.startSuperstep(BspServiceWorker.java:836)
> at org.apache.giraph.graph.GraphMapper.map(GraphMapper.java:551)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:369)
> at org.apache.hadoop.mapred.Child$4.run(Child.java:259)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059)
> at org.apache.hadoop.mapred.Child.main(Child.java:253)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for
> /_hadoopBsp/job_201110141621_0001/_applicationAttemptsDir/0/_superstepDir/103/_vertexRangeAssignments
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:809)
> at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:837)
> at
> org.apache.giraph.graph.BspServiceWorker.startSuperstep(BspServiceWorker.java:830)
> ... 9 more
> I dont know whether it should be called a bug or not. Wait for some help,
> thx...
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