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https://issues.apache.org/jira/browse/KAFKA-5375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apurva Mehta updated KAFKA-5375:
--------------------------------
Labels: exactly-once (was: )
> Transactions: Concurrent transactional consumer loses messages when there are
> broker bounces
> --------------------------------------------------------------------------------------------
>
> Key: KAFKA-5375
> URL: https://issues.apache.org/jira/browse/KAFKA-5375
> Project: Kafka
> Issue Type: Bug
> Reporter: Apurva Mehta
> Assignee: Apurva Mehta
> Priority: Blocker
> Labels: exactly-once
> Fix For: 0.11.0.0
>
>
> With the system test modifications in KAFKA-5366, the concurrent reader
> almost always consumes a fraction of the expected messages when there are
> broker bounces. A consumer running without concurrent writes consumes all the
> messages from the topic in question in the same test.
> {noformat}
> ================================================================================
> test_id:
> kafkatest.tests.core.transactions_test.TransactionsTest.test_transactions.failure_mode=clean_bounce.bounce_target=brokers
> status: FAIL
> run time: 1 minute 59.169 seconds
> Input and concurrently consumed output message sets are not equal. Num
> input messages: 20000. Num concurrently_consumed_messages: 0
> Traceback (most recent call last):
> File
> "/usr/local/lib/python2.7/dist-packages/ducktape/tests/runner_client.py",
> line 123, in run
> data = self.run_test()
> File
> "/usr/local/lib/python2.7/dist-packages/ducktape/tests/runner_client.py",
> line 176, in run_test
> return self.test_context.function(self.test)
> File "/usr/local/lib/python2.7/dist-packages/ducktape/mark/_mark.py", line
> 321, in wrapper
> return functools.partial(f, *args, **kwargs)(*w_args, **w_kwargs)
> File "/opt/kafka-dev/tests/kafkatest/tests/core/transactions_test.py", line
> 238, in test_transactions
> (len(input_message_set), len(concurrently_consumed_message_set))
> AssertionError: Input and concurrently consumed output message sets are not
> equal. Num input messages: 20000. Num concurrently_consumed_messages: 0
> {noformat}
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