Hi,
We have encountered another case of series of errors which I would need
more help in understanding.

In logs we see message like this:
ERROR 2017-03-25 03:41:40,001 [kafka-producer-network-thread |
85-StreamThread-3-producer]:
org.apache.kafka.streams.processor.internals.RecordCollectorImpl - task
[0_1] Error sending record to topic new-part-advice-key-table-changelog. No
more offsets will be recorded for this task and the exception will
eventually be thrown

then some millisecond later
ERROR 2017-03-25 03:41:40,149 [StreamThread-3]:
org.apache.kafka.streams.processor.internals.StreamThread - stream-thread
[StreamThread-3] Failed while executing StreamTask 0_1 due to flush state:
org.apache.kafka.streams.errors.StreamsException: task [0_1] exception
caught when producing
    at
org.apache.kafka.streams.processor.internals.RecordCollectorImpl.checkForException(RecordCollectorImpl.java:119)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.RecordCollectorImpl.flush(RecordCollectorImpl.java:127)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamTask.flushState(StreamTask.java:422)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread$4.apply(StreamThread.java:555)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.performOnAllTasks(StreamThread.java:513)
[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.flushAllState(StreamThread.java:551)
[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.shutdownTasksAndState(StreamThread.java:463)
[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.shutdown(StreamThread.java:408)
[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:389)
[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
org.apache.kafka.common.errors.NotLeaderForPartitionException: This server
is not the leader for that topic-partition.

finally we get this
ERROR 2017-03-25 03:41:45,724 [StreamThread-3]: com.advice.TestKafkaAdvice
- Uncaught exception:
org.apache.kafka.streams.errors.StreamsException: Exception caught in
process. taskId=0_1, processor=KSTREAM-SOURCE-0000000000,
topic=advice-stream, partition=1, offset=48062286
    at
org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:216)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:651)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:378)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
Caused by: org.apache.kafka.streams.errors.StreamsException: task [0_1]
exception caught when producing
    at
org.apache.kafka.streams.processor.internals.RecordCollectorImpl.checkForException(RecordCollectorImpl.java:119)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.RecordCollectorImpl.send(RecordCollectorImpl.java:76)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]
    at
org.apache.kafka.streams.processor.internals.RecordCollectorImpl.send(RecordCollectorImpl.java:64)
~[kafka-streams-0.10.2.1-SNAPSHOT.jar:na]


Again it is not clear why in this case we need to shut down the steams
thread and eventually the application. Shouldn't we capture this error too?

Thanks
Sachin

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