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ASF GitHub Bot commented on FLINK-7635: --------------------------------------- Github user aljoscha commented on a diff in the pull request: https://github.com/apache/flink/pull/4702#discussion_r140528890 --- Diff: flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/operators/windowing/AccumulatingKeyedTimePanes.java --- @@ -212,6 +213,11 @@ public KeyedStateStore windowState() { public KeyedStateStore globalState() { return globalState; } + + @Override + public <X> void output(OutputTag<X> outputTag, X value) { + throw new UnsupportedOperationException("current watermark is not supported in this context"); --- End diff -- Still has the old message about watermarks. > Support sideOutput in ProcessWindowFunciton > ------------------------------------------- > > Key: FLINK-7635 > URL: https://issues.apache.org/jira/browse/FLINK-7635 > Project: Flink > Issue Type: Improvement > Components: DataStream API, Scala API > Reporter: Chen Qin > Assignee: Bowen Li > Priority: Minor > Fix For: 1.4.0, 1.3.3 > > > [FLINK-4460|https://issues.apache.org/jira/browse/FLINK-4460] only > implemented output to ProcessFunction Context. It would be nice to add > support to ProcessWindow and ProcessAllWindow functions as well. [email > threads|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/question-on-sideoutput-from-ProcessWindow-function-td15500.html] > [~aljoscha] I thought this is good warm up task for ppl to learn how window > function works in general. Otherwise feel free to assign back to me. -- This message was sent by Atlassian JIRA (v6.4.14#64029)