Github user abhishekagarwal87 commented on the issue:
https://github.com/apache/storm/pull/1544
No there was another error in the same test
```
classname: org.apache.storm.topology.WindowedBoltExecutorTest / testname:
testExecuteWithLateTupleStream
java.util.ConcurrentModificationException: null
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:859)
at java.util.ArrayList$Itr.next(ArrayList.java:831)
at java.util.AbstractCollection.toString(AbstractCollection.java:457)
at java.lang.String.valueOf(String.java:2849)
at java.io.PrintStream.println(PrintStream.java:821)
at
org.apache.storm.topology.WindowedBoltExecutorTest.testExecuteWithLateTupleStream(WindowedBoltExecutorTest.java:223)
```
I see now that this fix itself may not suffice. Let me dig deeper and try
to find a solution.
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