Apurva Mehta created KAFKA-5351:
-----------------------------------

             Summary: Broker clean bounce test puts the broker into a 
'CONCURRENT_TRANSACTIONS' state permanently
                 Key: KAFKA-5351
                 URL: https://issues.apache.org/jira/browse/KAFKA-5351
             Project: Kafka
          Issue Type: Sub-task
            Reporter: Apurva Mehta
            Priority: Blocker


In the broker clean bounce test, sometimes the consumer just hangs on a request 
to the transactional coordinator because it keeps getting a 
`CONCURRENT_TRANSACTIONS` error. This continues for 30 seconds, until the 
process is killed. 

{noformat}
[2017-05-31 04:54:14,053] DEBUG TransactionalId my-second-transactional-id -- 
Received FindCoordinator response with error NONE 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,053] DEBUG TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,053] TRACE TransactionalId: my-second-transactional-id -- 
Waiting 100ms before resending a transactional request 
(transactionalId=my-second-transactional-id, producerId=2000, producerEpoch=0, 
result=COMMIT) (org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,154] TRACE TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) to node 1 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,191] TRACE Got transactional response for 
request:(transactionalId=my-second-transactional-id, producerId=2000, 
producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,191] DEBUG TransactionalId my-second-transactional-id -- 
Received EndTxn response with error COORDINATOR_NOT_AVAILABLE 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,192] DEBUG TransactionalId: my-second-transactional-id -- 
Sending transactional request (type=FindCoordinatorRequest, 
coordinatorKey=my-second-transactional-id, coordinatorType=TRANSACTION) 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,192] TRACE TransactionalId: my-second-transactional-id -- 
Sending transactional request (type=FindCoordinatorRequest, 
coordinatorKey=my-second-transactional-id, coordinatorType=TRANSACTION) to node 
3 (org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,193] TRACE Got transactional response for 
request:(type=FindCoordinatorRequest, 
coordinatorKey=my-second-transactional-id, coordinatorType=TRANSACTION) 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,193] DEBUG TransactionalId my-second-transactional-id -- 
Received FindCoordinator response with error NONE 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,193] DEBUG TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,193] TRACE TransactionalId: my-second-transactional-id -- 
Waiting 100ms before resending a transactional request 
(transactionalId=my-second-transactional-id, producerId=2000, producerEpoch=0, 
result=COMMIT) (org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,294] TRACE TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) to node 1 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,294] TRACE Got transactional response for 
request:(transactionalId=my-second-transactional-id, producerId=2000, 
producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,295] DEBUG TransactionalId my-second-transactional-id -- 
Received EndTxn response with error CONCURRENT_TRANSACTIONS 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,295] DEBUG TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,295] TRACE TransactionalId: my-second-transactional-id -- 
Waiting 100ms before resending a transactional request 
(transactionalId=my-second-transactional-id, producerId=2000, producerEpoch=0, 
result=COMMIT) (org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,395] TRACE TransactionalId: my-second-transactional-id -- 
Sending transactional request (transactionalId=my-second-transactional-id, 
producerId=2000, producerEpoch=0, result=COMMIT) to node 1 
(org.apache.kafka.clients.producer.internals.Sender)
[2017-05-31 04:54:14,398] TRACE Got transactional response for 
request:(transactionalId=my-second-transactional-id, producerId=2000, 
producerEpoch=0, result=COMMIT) 
(org.apache.kafka.clients.producer.internals.TransactionManager)
[2017-05-31 04:54:14,398] DEBUG TransactionalId my-second-transactional-id -- 
Received EndTxn response with error CONCURRENT_TRANSACTIONS 
(org.apache.kafka.clients.producer.internals.TransactionManager)
{noformat}



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