Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1030#issuecomment-138841521
I think this looks good, except for the comment with the final variable for
the lock.
One more comment: When concatenating strings, avoid constructs like `"
value=" + value.toString()`. Rather do `"value=" + value`. That is safe against
null pointers.
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