Github user xccui commented on the issue:
https://github.com/apache/flink/pull/5210
Hi @sunjincheng121, thanks for the review! You may refer to [this
thread](https://lists.apache.org/thread.html/cfe3b1718a479300dc91d1523be023ef5bc702bd5ad53af4fea5a596@%3Cuser.flink.apache.org%3E)
for further background of the issue.
Thanks, Xingcan---
