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https://issues.apache.org/jira/browse/SPARK-57657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-57657:
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Labels: pull-request-available (was: )
> Spark Connect should not drop streaming listener events on a transient send
> failure
> -----------------------------------------------------------------------------------
>
> Key: SPARK-57657
> URL: https://issues.apache.org/jira/browse/SPARK-57657
> Project: Spark
> Issue Type: Bug
> Components: Connect
> Affects Versions: 5.0.0
> Reporter: Hyukjin Kwon
> Priority: Major
> Labels: pull-request-available
>
> {{ClientStreamingQuerySuite."listener events"}} is flaky (e.g. Java 21
> connect): the QueryStarted/QueryProgress events arrive but the terminal
> QueryTerminatedEvent is never received, even though the query has stopped.
> {{SparkConnectListenerBusListener.send}} removes the server-side listener and
> stops sending ALL further events on the first {{onNext}} exception, so a
> single transient failure on a frequent progress event silently drops the
> later terminate event. Fix: retry onNext a small bounded number of times
> before tearing the listener down (cleanup still happens when the client is
> genuinely unresponsive). Test diagnostics are added to debug any future
> recurrence in scheduled jobs, since the connect server logs are not captured
> in CI.
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