[
https://issues.apache.org/jira/browse/FLINK-21310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335913#comment-17335913
]
Flink Jira Bot commented on FLINK-21310:
----------------------------------------
This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> unexpected behavior of DataStream union
> ---------------------------------------
>
> Key: FLINK-21310
> URL: https://issues.apache.org/jira/browse/FLINK-21310
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.12.0
> Reporter: Tianshi Zhu
> Priority: Major
> Labels: stale-major
>
> [https://gist.github.com/tianshizz/fd1bdbcc4676783b7300984c0bf532c1]
> The gist shows three unit tests, that have different union behaviors. In the
> first one, a data stream unions with itself. In the second one, two identical
> data streams are unioned. However, the two operations will lead to different
> end results, which seems surprising to me.
> In the third test when the list is long enough, union can show
> nondeterministic behavior. When running the third test for multiple times,
> each time the test will fail with a different `i` position.
> Are these expected? Could someone help me understand the different behaviors
> here?
> Thanks!
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
