NullPointerException when starting task

[Megan Patten <me...@blueapron.com.INVALID>]

Hi,

We've run into a NullPointerException that looks like it might be related
to https://issues.apache.org/jira/browse/KAFKA-5141

Here's the Stacktrace:

java.lang.NullPointerException

[2017-06-02 15:55:51,454] ERROR Failed to start task
sts-sink-connector-0 (org.apache.kafka.connect.runtime.Worker)
   at org.apache.kafka.connect.runtime.ConnectorConfig.enrich(ConnectorConfig.java:147)
   at org.apache.kafka.connect.runtime.ConnectorConfig.<init>(ConnectorConfig.java:113)
   at org.apache.kafka.connect.runtime.Worker.startTask(Worker.java:312)
   at org.apache.kafka.connect.runtime.ConnectorConfig.<init>(ConnectorConfig.java:109)
   at org.apache.kafka.connect.runtime.distributed.DistributedHerder.startTask(DistributedHerder.java:834)
   at org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1500(DistributedHerder.java:101)
   at org.apache.kafka.connect.runtime.distributed.DistributedHerder$13.call(DistributedHerder.java:848)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at org.apache.kafka.connect.runtime.distributed.DistributedHerder$13.call(DistributedHerder.java:844)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)


Has anyone encountered this issue before?

If anyone knows where to get started with reliably reproducing this, I'd be
happy to take a look at fixing it.

Thanks,
Megan