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asked 2018-10-23 18:05:52 +0800

DennyDeng1 gravatar image DennyDeng1

Clustering NotSerializableException

My app is clustering with two tomcat instance, I see many java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle, it is ZK class, ZK supports clustering, but why I have this exception? I don't know how my app to touch this class, I don't have logic to invoke BindUiLifeCycle at all. Looking forward to your help, many thanks!

    23-Oct-2018 11:26:29.047 WARNING [msm-storage-thread-1] de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes Cannot serialize session attribute [javax.zkoss.zk.ui.Session] for session [4563FA27DD4B3DC33F8983A4C44F9A0B.app1]
 java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.EventListenerInfo.write(EventListenerInfo.java:68)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3308)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3287)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    ...
    ...
    at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:433)
    at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes(JavaSerializationTranscoder.java:139)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.serializeAttributes(JavaSerializationTranscoder.java:100)
    at de.javakaffee.web.msm.TranscoderService.serializeAttributes(TranscoderService.java:151)
    at de.javakaffee.web.msm.BackupSessionTask.serializeAttributes(BackupSessionTask.java:179)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:50)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Clustering NotSerializableException

My app is clustering with two tomcat instance, I see many java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle, it is ZK class, ZK supports clustering, but why I have this exception? org.zkoss.bind.tracker.impl.BindUiLifeCycle
I don't know how my app to touch this class, I don't have logic to invoke BindUiLifeCycle at all. Looking forward to your help, directly. ZK supports clustering, it is ZK class, but why I have this exception? Any comments will be appreciated, many thanks!

    23-Oct-2018 11:26:29.047 WARNING [msm-storage-thread-1] de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes Cannot serialize session attribute [javax.zkoss.zk.ui.Session] for session [4563FA27DD4B3DC33F8983A4C44F9A0B.app1]
 java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.EventListenerInfo.write(EventListenerInfo.java:68)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3308)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3287)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    ...
    ...
    at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:433)
    at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes(JavaSerializationTranscoder.java:139)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.serializeAttributes(JavaSerializationTranscoder.java:100)
    at de.javakaffee.web.msm.TranscoderService.serializeAttributes(TranscoderService.java:151)
    at de.javakaffee.web.msm.BackupSessionTask.serializeAttributes(BackupSessionTask.java:179)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:50)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Clustering NotSerializableException

My app is clustering with two tomcat instance, I see many java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
I don't know how my app to touch this class, I don't have logic to invoke BindUiLifeCycle directly. ZK supports clustering, it is ZK class, but why I have this exception? I don't find document in detail about the usage of BindUiLifeCycle, so seeking help here. Any comments will be appreciated, many thanks!

    23-Oct-2018 11:26:29.047 WARNING [msm-storage-thread-1] de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes Cannot serialize session attribute [javax.zkoss.zk.ui.Session] for session [4563FA27DD4B3DC33F8983A4C44F9A0B.app1]
 java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.EventListenerInfo.write(EventListenerInfo.java:68)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3308)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3287)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    ...
    ...
    at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:433)
    at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes(JavaSerializationTranscoder.java:139)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.serializeAttributes(JavaSerializationTranscoder.java:100)
    at de.javakaffee.web.msm.TranscoderService.serializeAttributes(TranscoderService.java:151)
    at de.javakaffee.web.msm.BackupSessionTask.serializeAttributes(BackupSessionTask.java:179)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:50)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Clustering Clustering: BindUiLifeCycle is not serializable cause NotSerializableException

My app is clustering with two tomcat instance, I see many java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
I don't know how my app to touch this class, I don't have logic to invoke BindUiLifeCycle directly. ZK supports clustering, it BindUiLifeCycle is a ZK class, but why I have this exception? And I don't find document in detail about the usage of BindUiLifeCycle, so seeking your help here. Any comments will be appreciated, many thanks!thanks.

    23-Oct-2018 11:26:29.047 WARNING [msm-storage-thread-1] de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes Cannot serialize session attribute [javax.zkoss.zk.ui.Session] for session [4563FA27DD4B3DC33F8983A4C44F9A0B.app1]
 java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.EventListenerInfo.write(EventListenerInfo.java:68)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3308)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3287)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    ...
    ...
    at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:433)
    at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes(JavaSerializationTranscoder.java:139)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.serializeAttributes(JavaSerializationTranscoder.java:100)
    at de.javakaffee.web.msm.TranscoderService.serializeAttributes(TranscoderService.java:151)
    at de.javakaffee.web.msm.BackupSessionTask.serializeAttributes(BackupSessionTask.java:179)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:50)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Clustering: BindUiLifeCycle is not serializable cause NotSerializableException

My app is clustering with two tomcat instance, I see many java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
I don't know how my app to touch this class, I don't have logic to invoke BindUiLifeCycle directly.

ZK supports clustering, BindUiLifeCycle is a ZK class, but why I have this exception? And I don't find document in detail about the usage of BindUiLifeCycle, so seeking your help here.

Any comments will be appreciated, many thanks.

    23-Oct-2018 11:26:29.047 WARNING [msm-storage-thread-1] de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes Cannot serialize session attribute [javax.zkoss.zk.ui.Session] for session [4563FA27DD4B3DC33F8983A4C44F9A0B.app1]
 java.io.NotSerializableException: org.zkoss.bind.tracker.impl.BindUiLifeCycle
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.EventListenerInfo.write(EventListenerInfo.java:68)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3308)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at org.zkoss.zk.ui.AbstractComponent.writeObject(AbstractComponent.java:3287)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    ...
    ...
    at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:433)
    at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1028)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.writeAttributes(JavaSerializationTranscoder.java:139)
    at de.javakaffee.web.msm.JavaSerializationTranscoder.serializeAttributes(JavaSerializationTranscoder.java:100)
    at de.javakaffee.web.msm.TranscoderService.serializeAttributes(TranscoderService.java:151)
    at de.javakaffee.web.msm.BackupSessionTask.serializeAttributes(BackupSessionTask.java:179)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
    at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:50)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
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