pnowojski commented on a change in pull request #6989: [FLINK-10455][Kafka Tx]
Close transactional producers in case of failure and termination
URL: https://github.com/apache/flink/pull/6989#discussion_r230408448
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File path:
flink-connectors/flink-connector-kafka-0.11/src/main/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaProducer011.java
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@@ -671,6 +672,9 @@ public void close() throws FlinkKafka011Exception {
}
// make sure we propagate pending errors
checkErroneous();
+ pendingTransactions().values().forEach(transaction ->
Review comment:
It seems strange why order of those lines matters. It might indicate that
our `internal.FlinkKafkaProducer#flushNewPartitions` method is broken, since
that's where our test is deadlocking.
I briefly checked
`org.apache.kafka.clients.producer.internals.TransactionManager#beginCommit`
(which our `flushNewPartitions` is partially mimicking), and maybe the problem
is that we are skipping `TransactionManager#maybeFailWithError` call? Could you
invoke this method in our `flushNewPartitions` and see whether the deadlock is
gone?
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