Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/706
Error handling on the relationships is looking good, thanks for making
those updates.
One more thing I ran into, when I set concurrent tasks to 2 on the
PutHiveStreamingProcessor and I was generating a flow file every 500 ms, I
would occasionally get the following error:
```
2016-08-02 20:50:17,860 ERROR [Timer-Driven Process Thread-1]
o.a.n.processors.hive.PutHiveStreaming
java.lang.NullPointerException: null
at
org.apache.hive.hcatalog.streaming.StrictJsonWriter.write(StrictJsonWriter.java:79)
~[na:na]
at
org.apache.hive.hcatalog.streaming.HiveEndPoint$TransactionBatchImpl.write(HiveEndPoint.java:632)
~[na:na]
at org.apache.nifi.util.hive.HiveWriter$1.call(HiveWriter.java:113)
~[na:na]
at org.apache.nifi.util.hive.HiveWriter$1.call(HiveWriter.java:110)
~[na:na]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
~[na:1.8.0_102]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_102]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_102]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_102]
```
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