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https://issues.apache.org/jira/browse/SPARK-61185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon reassigned SPARK-61185:
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Assignee: Hyukjin Kwon
> Remove each registration of a streaming query listener exactly once, also of
> a listener added twice or removed through another session, in the Python
> client as PySpark does
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-61185
> URL: https://issues.apache.org/jira/browse/SPARK-61185
> Project: Spark
> Issue Type: Bug
> Components: Connect
> Affects Versions: connect-rust-4.3.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Major
> Labels: pull-request-available
> Fix For: connect-rust-4.3.0
>
>
> The Python client keeps one registration id per listener object, so
> removeListener removes only one entry of the listener bus of the session and
> forgets the id even when that bus never had the listener.
> Repro: add the same listener twice, then remove it twice; the bus keeps one
> entry and the listener keeps getting query events.
> Also: addListener on spark.streams, then removeListener on spark2.streams
> (another session) drops the id, so the later spark.streams.removeListener is
> a no-op.
> PySpark removes one entry per removeListener from the bus of the session, so
> both cases end with an empty bus and no events.
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