Github user tzulitai commented on the issue:
https://github.com/apache/flink/pull/4301
@aljoscha on some second thinking, I don't think we can easily deal with
the fact that, when restoring from 1.3.1 / 1.3.0 savepoints in 1.3.2, users
will not benefit from this bug fix.
There is basically no guarantee in what the distribution would be when
restoring from 1.3.1 / 1.3.0, and therefore no way to manipulate it to follow
the new fixed distribution scheme we introduce here.
It may be possible if we force a migrate to union list state in 1.3.2, but
I'm not really sure that we want to do that ..
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