Hi All,
We have an application which uses JCS cache to write data into
IndexedDiskCache, sometime are getting ConcurrentModificationException when
application tries to update the cache object frequently, please let me know
what could be the reason and is there any workarounds to solve the issue. We
are using JCS 1.3
2012-01-25 10:38:44,088 ERROR [RemoteCache] - <Disabling remote cache due to
error: Failed to put [TEMP1] to tempRegion>
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:841)
at java.util.HashMap$EntryIterator.next(HashMap.java:883)
at java.util.HashMap$EntryIterator.next(HashMap.java:881)
at java.util.HashMap.writeObject(HashMap.java:1037)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at
org.apache.jcs.utils.serialization.StandardSerializer.serialize(StandardSerializer.java:50)
at
org.apache.jcs.utils.serialization.SerializationConversionUtil.getSerializedCacheElement(SerializationConversionUtil.java:73)
at
org.apache.jcs.auxiliary.remote.RemoteCache.update(RemoteCache.java:207)
at
org.apache.jcs.engine.CacheAdaptor.handlePut(CacheAdaptor.java:91)
at
org.apache.jcs.engine.PooledCacheEventQueue$PutEvent.doRun(PooledCacheEventQueue.java:474)
at
org.apache.jcs.engine.PooledCacheEventQueue$AbstractCacheEvent.run(PooledCacheEventQueue.java:397)
at
EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:748)
at java.lang.Thread.run(Thread.java:595)
Regards,
Vijay
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