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https://issues.apache.org/jira/browse/FLINK-29856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634817#comment-17634817
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Maximilian Michels commented on FLINK-29856:
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I think the symptom described here manifests as a successful savepoint which
does not include the mentioned sources because they have not been checkpointed
as part of the savepoint. [~mason6345] I'm assuming this would mean that the
resulting savepoint is corrupted?
> Triggering savepoint does not trigger source operator checkpoint
> -----------------------------------------------------------------
>
> Key: FLINK-29856
> URL: https://issues.apache.org/jira/browse/FLINK-29856
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Checkpointing
> Affects Versions: 1.16.0
> Reporter: Mason Chen
> Priority: Major
>
> When I trigger a savepoint with the Flink K8s operator, I verified for two
> sources (KafkaSource and MultiClusterKafkaSource) do not invoke snapshotState
> or notifyCheckpointComplete. This is easily reproducible in a simple pipeline
> (e.g. KafkaSource -> print). In this case, the savepoint is complete and
> successful, which is verified by the Flink Checkpoint UI tab and the
> jobmanager logs. e.g. `
> Triggering checkpoint 3 (type=SavepointType\{name='Savepoint',
> postCheckpointAction=NONE, formatType=CANONICAL})`
>
> However, when the checkpoint occurs via the interval, I do see the sources
> checkpointing properly and expected logs in the output.
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