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https://issues.apache.org/jira/browse/KAFKA-8289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833875#comment-16833875
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John Roesler commented on KAFKA-8289:
-------------------------------------
Just confirming this has now been merged to 2.1, 2.2, and trunk (2.3), and the
fix versions listed in the ticket are accurate.
2.2.1 release is in progress (see the dev mailing list for details)
> KTable<Windowed<String>, Long> can't be suppressed
> ---------------------------------------------------
>
> Key: KAFKA-8289
> URL: https://issues.apache.org/jira/browse/KAFKA-8289
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.1.0, 2.2.0, 2.1.1
> Environment: Broker on a Linux, stream app on my win10 laptop.
> I add one row log.message.timestamp.type=LogAppendTime to my broker's
> server.properties. stream app all default config.
> Reporter: Xiaolin Jia
> Assignee: John Roesler
> Priority: Blocker
> Fix For: 2.3.0, 2.1.2, 2.2.1
>
>
> I write a simple stream app followed official developer guide [Stream
> DSL|[https://kafka.apache.org/22/documentation/streams/developer-guide/dsl-api.html#window-final-results]].
> but I got more than one [Window Final
> Results|https://kafka.apache.org/22/documentation/streams/developer-guide/dsl-api.html#id31]
> from a session time window.
> time ticker A -> (4,A) / 25s,
> time ticker B -> (4, B) / 25s all send to the same topic
> below is my stream app code
> {code:java}
> kstreams[0]
> .peek((k, v) -> log.info("--> ping, k={},v={}", k, v))
> .groupBy((k, v) -> v, Grouped.with(Serdes.String(), Serdes.String()))
> .windowedBy(SessionWindows.with(Duration.ofSeconds(100)).grace(Duration.ofMillis(20)))
> .count()
> .suppress(Suppressed.untilWindowCloses(BufferConfig.unbounded()))
> .toStream().peek((k, v) -> log.info("window={},k={},v={}", k.window(),
> k.key(), v));
> {code}
> {{here is my log print}}
> {noformat}
> 2019-04-24 20:00:26.142 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:00:47.070 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556106587744,
> endMs=1556107129191},k=A,v=20
> 2019-04-24 20:00:51.071 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:01:16.065 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:01:41.066 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:02:06.069 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:02:31.066 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:02:56.208 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:03:21.070 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:03:46.078 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:04:04.684 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:04:11.069 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:04:19.371 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107426409},k=B,v=9
> 2019-04-24 20:04:19.372 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107445012},k=A,v=1
> 2019-04-24 20:04:29.604 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:04:36.067 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:04:49.715 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107451397},k=B,v=10
> 2019-04-24 20:04:49.716 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107469935},k=A,v=2
> 2019-04-24 20:04:54.593 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:05:01.070 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:05:19.599 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:05:20.045 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107476398},k=B,v=11
> 2019-04-24 20:05:20.047 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107501398},k=B,v=12
> 2019-04-24 20:05:26.075 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:05:44.598 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:05:50.399 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107519930},k=A,v=4
> 2019-04-24 20:05:50.400 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107526405},k=B,v=13
> 2019-04-24 20:05:51.067 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:06:09.595 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:06:16.089 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:06:20.765 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107544929},k=A,v=5
> 2019-04-24 20:06:20.767 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107569926},k=A,v=6
> 2019-04-24 20:06:34.595 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:06:41.063 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:06:51.081 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107576415},k=B,v=15
> 2019-04-24 20:06:51.082 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107594925},k=A,v=7
> 2019-04-24 20:06:59.607 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:07:06.072 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:07:21.440 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107601391},k=B,v=16
> 2019-04-24 20:07:21.441 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107619935},k=A,v=8
> 2019-04-24 20:07:24.596 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:07:31.066 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:07:49.608 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:07:51.775 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107626420},k=B,v=17
> 2019-04-24 20:07:51.777 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107651396},k=B,v=18
> 2019-04-24 20:07:56.064 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:08:14.591 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:08:21.066 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:08:22.125 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107669943},k=A,v=10
> 2019-04-24 20:08:22.126 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107694921},k=A,v=11
> 2019-04-24 20:08:39.619 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:08:46.067 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:08:52.457 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107701397},k=B,v=20
> 2019-04-24 20:08:52.458 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107719949},k=A,v=12
> 2019-04-24 20:09:04.599 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=A
> 2019-04-24 20:09:11.066 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : --> ping, k=4,v=B
> 2019-04-24 20:09:22.794 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107226473,
> endMs=1556107726398},k=B,v=21
> 2019-04-24 20:09:22.796 INFO --- [-StreamThread-1] c.g.k.AppStreams
> : window=Window{startMs=1556107445012,
> endMs=1556107744928},k=A,v=13{noformat}
> Can‘t a [SessionWindowedKStream] be suppressed after count operation? It
> seems the latest type record produce a previous type record 'Window Final
> Results'. I just want get exactly one [Window Final
> Results|https://kafka.apache.org/22/documentation/streams/developer-guide/dsl-api.html#id31].
>
> First i just start one time ticker, log print seems ok, when I start the
> second, then window info print log appeared.
> My source stream record rate is a same v record / 25s, gap of inactivity is
> 100s, 25<100. I shouldn't got so many window info print log. Session window
> close and then reopened? my grace is 20 millisecond, it should not be ah.
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