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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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Hong Liang Teoh updated FLINK-21228:
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Fix Version/s: aws-connector-5.1.0
> 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
> Priority: Not a Priority
> Labels: auto-deprioritized-major, auto-deprioritized-minor,
> auto-unassigned
> Fix For: aws-connector-5.1.0
>
>
> *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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