Github user uce commented on the pull request:
https://github.com/apache/flink/pull/938#issuecomment-125664433
It's the same problem I guess, if you look at this Thread:
```
"Custom Source (6/6)" daemon prio=10 tid=0x00007f96a80c9800 nid=0x112cf
runnable [0x00007f9684c36000]
java.lang.Thread.State: RUNNABLE
at java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java:675)
at
java.io.ObjectInputStream.readClassDescriptor(ObjectInputStream.java:829)
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1600)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1516)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1349)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at java.util.ArrayList.readObject(ArrayList.java:696)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:622)
at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1001)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1892)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1797)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1349)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:302)
at
org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:264)
at
org.apache.flink.streaming.api.graph.StreamConfig.getNonChainedOutputs(StreamConfig.java:275)
at
org.apache.flink.streaming.runtime.tasks.OutputHandler.createChainedCollector(OutputHandler.java:147)
at
org.apache.flink.streaming.runtime.tasks.OutputHandler.<init>(OutputHandler.java:104)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.registerInputOutput(StreamTask.java:97)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:518)
at java.lang.Thread.run(Thread.java:701)
```
It's still being deployed.
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