Github user greghogan commented on the issue:
https://github.com/apache/flink/pull/3595
@wenlong88 you are right that the position can currently be moved beyond
written data. This still feels a bit like feature creep as we've added to the
PR. Do you need to expand the array is this manner? How did you run across this
bug? I'm not disagreeing with the change but would like to be conservative and
understand the why.
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