Nico Kruber created FLINK-13498:
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Summary: Reduce Kafka producer startup time by aborting
transactions in parallel
Key: FLINK-13498
URL: https://issues.apache.org/jira/browse/FLINK-13498
Project: Flink
Issue Type: Bug
Components: Connectors / Kafka
Affects Versions: 1.8.1, 1.9.0
Reporter: Nico Kruber
Assignee: Nico Kruber
When a Flink job with a Kafka producer starts up without previous state, it
currently starts 5 * kafkaPoolSize number of Kafka producers (per sink
instance) to abort potentially existing transactions from a first run without a
completed snapshot.
Apparently, this is quite slow and it is also done sequentially. Until there is
a better way of aborting these transactions with Kafka, we could do this in
parallel quite easily and at least make use of lingering CPU resources.
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