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https://issues.apache.org/jira/browse/FLINK-21228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Danny Cranmer reassigned FLINK-21228:
-------------------------------------
Assignee: Danny Cranmer
> [Kinesis][Producer] Deadlock in KinesisProducer
> -----------------------------------------------
>
> Key: FLINK-21228
> URL: https://issues.apache.org/jira/browse/FLINK-21228
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kinesis
> Affects Versions: 1.12.1
> Reporter: Danny Cranmer
> Assignee: Danny Cranmer
> Priority: Major
>
> *Background*
> Kinesis sink failed and resulted in deadlock:
> - Indefinite backpressure being applied
> - Exception never thrown causing job to fail
> Application running with:
> {code:java}
> flinkKinesisProducer.setQueueLimit(1);
> flinkKinesisProducer.setFailOnError(true);
> {code}
> - {{KinesisProducer}} is waiting for queue to empty before sending the next
> record
> ([code|https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/FlinkKinesisProducer.java#L303])
> - KPL ran out of memory, which raised an error, however this is processed
> async
> ([code|https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/FlinkKinesisProducer.java#L275])
> - {{KinesisProducer}} would have rethrown the error and restarted the job,
> however operator stuck in an infinite loop enforcing the queue limit (which
> never clears)
> ([code|https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/FlinkKinesisProducer.java#L306])
> *Proposal*
> - {{checkAndPropagateAsyncError()}} while enforcing queue limit in
> {{enforceQueueLimit()}} to break deadlock
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