dawidwys commented on a change in pull request #13249: URL: https://github.com/apache/flink/pull/13249#discussion_r481031562
########## File path: flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java ########## @@ -1180,6 +1181,14 @@ public final CloseableRegistry getCancelables() { } } + // Clones the partition to avoid multiple stream edges sharing the same stream partitioner, + // like the case of https://issues.apache.org/jira/browse/FLINK-14087. + try { + outputPartitioner = InstantiationUtil.clone(outputPartitioner, Thread.currentThread().getContextClassLoader()); Review comment: In my opinion we should clone the partitioner before initializing it. I think the `configure` can theoretically initialize some state that is not serializable. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org