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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