Github user nickwallen commented on the issue:
https://github.com/apache/metron/pull/1178
Here is one other detail that I forgot to add to the description. This may
be important if you are trying to validate this fix on a multi-node cluster.
* This serialization error will never show itself if you are running with a
single worker as there is no need for Storm to serialize.
* Even when running the Profiler in a cluster on multiple workers, it will
only show-up if Storm runs the `ProfileBuilderBolt` and the downstream bolts
(`HBaseBolt` or `KafkaBolt`) on a separate worker. This is why you may not
always see the problem when running on a cluster (and why it was confusing to
track down.)
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