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https://issues.apache.org/jira/browse/FLINK-7838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16224640#comment-16224640
]
ASF GitHub Bot commented on FLINK-7838:
---------------------------------------
Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/4915#discussion_r147667457
--- Diff:
flink-connectors/flink-connector-kafka-0.11/src/main/java/org/apache/flink/streaming/connectors/kafka/internal/FlinkKafkaProducer.java
---
@@ -226,13 +228,19 @@ public int getTransactionCoordinatorId() {
private void flushNewPartitions() {
LOG.info("Flushing new partitions");
+ enqueueNewPartitions().await();
+ }
+
+ private TransactionalRequestResult enqueueNewPartitions() {
Object transactionManager = getValue(kafkaProducer,
"transactionManager");
- Object txnRequestHandler = invoke(transactionManager,
"addPartitionsToTransactionHandler");
- invoke(transactionManager, "enqueueRequest", new
Class[]{txnRequestHandler.getClass().getSuperclass()}, new
Object[]{txnRequestHandler});
- TransactionalRequestResult result =
(TransactionalRequestResult) getValue(txnRequestHandler,
txnRequestHandler.getClass().getSuperclass(), "result");
- Object sender = getValue(kafkaProducer, "sender");
- invoke(sender, "wakeup");
- result.await();
+ synchronized (transactionManager) {
+ Object txnRequestHandler = invoke(transactionManager,
"addPartitionsToTransactionHandler");
+ invoke(transactionManager, "enqueueRequest", new
Class[]{txnRequestHandler.getClass().getSuperclass()}, new
Object[]{txnRequestHandler});
+ TransactionalRequestResult result =
(TransactionalRequestResult) getValue(txnRequestHandler,
txnRequestHandler.getClass().getSuperclass(), "result");
+ Object sender = getValue(kafkaProducer, "sender");
+ invoke(sender, "wakeup");
--- End diff --
`sender.wakeup` is outside of the lock in the original code. Do you think
it makes a difference?
> Kafka011ProducerExactlyOnceITCase do not finish
> -----------------------------------------------
>
> Key: FLINK-7838
> URL: https://issues.apache.org/jira/browse/FLINK-7838
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Affects Versions: 1.4.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Blocker
> Fix For: 1.4.0
>
> Attachments: initTransactions_deadlock.txt, log.txt
>
>
> See attached log
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