Hi Frank, Is this happening when you are shutting down the app, or is the app shutting down unexpectedly?
The state transition error is not the main issue, it's largely a side effect of the unexpected transition so the first error is the cause probably. However, I can't tell what happened before since a normal shutdown also looks the same. Eno > On 16 Dec 2016, at 11:35, Frank Lyaruu <flya...@gmail.com> wrote: > > Hi people, > > I'm running a Kafka Streams app (trunk build from a few days ago), I see > this error from time to time: > > Exception in thread "StreamThread-18" java.lang.NullPointerException > > at org.apache.kafka.streams.processor.internals.StreamThread$5. > apply(StreamThread.java:998) > at org.apache.kafka.streams.processor.internals.StreamThread.pe > rformOnAllTasks(StreamThread.java:489) > at org.apache.kafka.streams.processor.internals.StreamThread. > closeAllTasks(StreamThread.java:995) > at org.apache.kafka.streams.processor.internals.StreamThread.sh > utdownTasksAndState(StreamThread.java:442) > at org.apache.kafka.streams.processor.internals.StreamThread. > shutdown(StreamThread.java:387) > at org.apache.kafka.streams.processor.internals.StreamThread. > run(StreamThread.java:368) > > > After that it spews a bunch of these: > > Exception in thread "StreamThread-13" java.lang.IllegalStateException: > Incorrect state transition from RUNNING to NOT_RUNNING > > at org.apache.kafka.streams.processor.internals.StreamThread. > setState(StreamThread.java:163) > at org.apache.kafka.streams.processor.internals.StreamThread. > shutdown(StreamThread.java:416) > > I'm now running on multiple instances, before I ran on a single instance, I > don't think I saw it then. > > regards, Frank
