[
https://issues.apache.org/jira/browse/FLINK-31852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17714505#comment-17714505
]
Weijie Guo commented on FLINK-31852:
------------------------------------
IIUC, The reason for this bug is the same as FLINK-18808.
> NumRecordsOut metrics broken for multiple outout chains
> -------------------------------------------------------
>
> Key: FLINK-31852
> URL: https://issues.apache.org/jira/browse/FLINK-31852
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Metrics
> Affects Versions: 1.17.0, 1.16.1
> Reporter: Gyula Fora
> Priority: Critical
> Attachments: image-2023-04-19-12-19-40-344.png,
> image-2023-04-19-12-21-35-385.png
>
>
> The numRecordsOut task metrics seem to be incorrect when there are multiple
> outputs in an operator chain. Consider a simple pipeline where you filter
> half of the stream for one sink and you get all the output for the other sink
> (and the sinks are not chained):
> In Flink 1.16 we get the following incorrect metrics:
> !image-2023-04-19-12-19-40-344.png!
> The records sent/received metrics simply dont add up. The records sent seem
> to correspond to the output sent to the first downstream task (which contains
> the filtered stream, so about half of the events).
>
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
