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https://issues.apache.org/jira/browse/FLINK-38335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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lincoln lee updated FLINK-38335:
--------------------------------
Affects Version/s: 2.1.0
(was: 2.1)
> SplitEnumeratorContext supports fixed delay async call.
> -------------------------------------------------------
>
> Key: FLINK-38335
> URL: https://issues.apache.org/jira/browse/FLINK-38335
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Common
> Affects Versions: 2.1.0
> Reporter: Hongshun Wang
> Priority: Major
> Fix For: 2.2
>
>
> SplitEnumeratorContext natively only supports fixed rate scheduling for
> asynchronous calls, which can lead to task accumulation if individual calls
> take too long to complete.
>
> For example, In KafkaSourceEnumerator, if once
> getSubscribedTopicPartitions cost two much time, then a lot of
> getSubscribedTopicPartitions will be added into work thread. Then
> initializePartitionSplits can only be executed after a long time since this
> paririon will be found.
> It will case that the assigned and read time of a partition is far lag from
> created time.
>
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