[jira] [Assigned] (FLINK-21228) [Kinesis][Producer] Deadlock in KinesisProducer

["Danny Cranmer (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-21228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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