incubator-s4-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Dingyu Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (S4-131) checkpoint error "CancellationException"
Date Tue, 26 Mar 2013 11:45:15 GMT
Dingyu Yang  created S4-131:
-------------------------------

             Summary: checkpoint error "CancellationException" 
                 Key: S4-131
                 URL: https://issues.apache.org/jira/browse/S4-131
             Project: Apache S4
          Issue Type: Bug
    Affects Versions: 0.6
         Environment: The configure like this:
App program:
...
 wordSumPE.setCheckpointingConfig(new CheckpointingConfig.Builder(CheckpointingMode.TIME).frequency(20).timeUnit(TimeUnit.SECONDS).build());
...
delpoy:
./s4 deploy -a=example.wordcountApp -c=testCluster1 -appName=wordApp -p=s4.checkpointing.filesystem.storageRootPath=/home/tmp/s4checkpoint
-emc=org.apache.s4.core.ft.FileSystemBackendCheckpointingModule

            Reporter: Dingyu Yang 
            Priority: Minor
             Fix For: 0.7



Then I get this error:
14:21:50.251 [Checkpointing-storage-0] WARN  org.apache.s4.core.ft.SaveStateTask - Cannot
save checkpoint : [PROTO_ID];[KEY] --> [example.WordSumPE];[word]
java.util.concurrent.ExecutionException: com.esotericsoftware.kryo.KryoException: java.util.ConcurrentModificationException
Serialization trace:
classes (sun.misc.Launcher$AppClassLoader)
contextClassLoader (java.lang.Thread)
thread (java.util.concurrent.ThreadPoolExecutor$Worker)
workers (java.util.concurrent.ThreadPoolExecutor)
fetchingThreadPool (org.apache.s4.core.ft.SafeKeeper)
checkpointingFramework (example.wordcountApp)
app (org.apache.s4.core.Stream)
downStream (example.WordSumPE)
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:232) ~[na:1.6.0_22]
    at java.util.concurrent.FutureTask.get(FutureTask.java:91) ~[na:1.6.0_22]
    at org.apache.s4.core.ft.SaveStateTask.run(SaveStateTask.java:66) ~[bin/:na]
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[na:1.6.0_22]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_22]
    at java.lang.Thread.run(Thread.java:662) [na:1.6.0_22]
Caused by: com.esotericsoftware.kryo.KryoException: java.util.ConcurrentModificationException
Serialization trace:
classes (sun.misc.Launcher$AppClassLoader)
contextClassLoader (java.lang.Thread)
thread (java.util.concurrent.ThreadPoolExecutor$Worker)
workers (java.util.concurrent.ThreadPoolExecutor)
fetchingThreadPool (org.apache.s4.core.ft.SafeKeeper)
checkpointingFramework (example.wordcountApp)
app (org.apache.s4.core.Stream)
downStream (example.WordSumPE)
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:585)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObjectOrNull(Kryo.java:552) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:68)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:18)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:571) ~[kryo-2.20.jar:na]
    at org.apache.s4.comm.serialize.KryoSerDeser.serialize(KryoSerDeser.java:91) ~[bin/:na]
    at org.apache.s4.core.ProcessingElement.serializeState(ProcessingElement.java:802) ~[bin/:na]
    at org.apache.s4.core.ft.SerializeTask.call(SerializeTask.java:42) ~[bin/:na]
    at org.apache.s4.core.ft.SerializeTask.call(SerializeTask.java:1) ~[bin/:na]
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) ~[na:1.6.0_22]
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) ~[na:1.6.0_22]
    ... 3 common frames omitted
Caused by: java.util.ConcurrentModificationException: null
    at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372) ~[na:1.6.0_22]
    at java.util.AbstractList$Itr.next(AbstractList.java:343) ~[na:1.6.0_22]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:74)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:18)
~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:504) ~[kryo-2.20.jar:na]
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
~[kryo-2.20.jar:na]
    ... 35 common frames omitted

I debug the program and at the position : SaveStateTask.run  "futureSerializedState.get(1000,
TimeUnit.MILLISECONDS)." The futureTask get "CancellationException" displayed above error.


--
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

Mime
View raw message