David Arthur created KAFKA-14263:
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Summary: Investigate flaky upgrade_test.py (missing messages)
Key: KAFKA-14263
URL: https://issues.apache.org/jira/browse/KAFKA-14263
Project: Kafka
Issue Type: Test
Affects Versions: 3.3.0
Reporter: David Arthur
During system tests, we occasionally see flaky failures of upgrade_test.py.
Here is one such recent failure on the 3.3 branch:
{code}
Module: kafkatest.tests.core.upgrade_test
Class: TestUpgrade
Method: test_upgrade
Arguments:
{
"compression_types": [
"none"
],
"from_kafka_version": "0.9.0.1",
"to_message_format_version": "0.9.0.1"
}
{code}
{code}
AssertionError("2 acked message did not make it to the Consumer. They are:
[21017, 21014]. We validated that the first 2 of these missing messages
correctly made it into Kafka's data files. This suggests they were lost on
their way to the consumer.")
{code}
It would be good to try and reproduce these types of failures and see how we
can make the test more robust.
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