GitHub user pavel-shvetsov-git opened a pull request:
https://github.com/apache/flink/pull/5927
[FLINK-8237] [BucketingSink] Better error message added
Added better error message as mentioned in issue description and comments.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pavel-shvetsov-git/flink master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5927.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #5927
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