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Stefan Richter updated FLINK-34693: ----------------------------------- Description: KafkaWriter is keeping instances of {{TwoPhaseCommitProducer}} in Dequeue of closeables ({{{}producerCloseables{}}}). We are only adding instances to the queue (for each txn?), but never remove them so that the can be GC’ed. >From heap dump: !image-2024-03-15-10-30-50-902.png! !04599375-f923-4d1a-8d68-9e17e54b363c#media-blob-url=true&id=9d1e022e-8762-45b3-877b-d298ec956078&collection=&contextId=870337&height=306&width=2284&alt=! !image-2024-03-15-10-30-08-280.png! was: KafkaWriter is keeping instances of {{TwoPhaseCommitProducer}} in Dequeue of closeables ({{{}producerCloseables{}}}). We are only adding instances to the queue (for each txn?), but never remove them so that the can be GC’ed. >From heap dump: !image-2024-03-15-10-30-50-902.png! !04599375-f923-4d1a-8d68-9e17e54b363c#media-blob-url=true&id=9d1e022e-8762-45b3-877b-d298ec956078&collection=&contextId=870337&height=306&width=2284&alt=!!image-2024-03-15-10-30-08-280.png!!image-2024-03-15-10-28-48-591.png! > Memory leak in KafkaWriter > -------------------------- > > Key: FLINK-34693 > URL: https://issues.apache.org/jira/browse/FLINK-34693 > Project: Flink > Issue Type: Bug > Components: Connectors / Kafka > Affects Versions: 1.18.0, 1.19.0, 1.18.1 > Reporter: Stefan Richter > Priority: Blocker > Attachments: image-2024-03-15-10-30-08-280.png, > image-2024-03-15-10-30-50-902.png > > > KafkaWriter is keeping instances of {{TwoPhaseCommitProducer}} in Dequeue of > closeables ({{{}producerCloseables{}}}). We are only adding instances to the > queue (for each txn?), but never remove them so that the can be GC’ed. > From heap dump: > !image-2024-03-15-10-30-50-902.png! > !04599375-f923-4d1a-8d68-9e17e54b363c#media-blob-url=true&id=9d1e022e-8762-45b3-877b-d298ec956078&collection=&contextId=870337&height=306&width=2284&alt=! > !image-2024-03-15-10-30-08-280.png! -- This message was sent by Atlassian Jira (v8.20.10#820010)