Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/1962#issuecomment-217125875
Thank you for opening the pull request.
I made some inline comments.
I don't think the proposed changes fix the issue described in the JIRA.
I would check on each `invoke()` if `hasFailure` is set. If that's the
case, you can reconnect to EL.
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