Tom Bentley created KAFKA-12879:
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Summary: Compatibility break in Admin.listOffsets()
Key: KAFKA-12879
URL: https://issues.apache.org/jira/browse/KAFKA-12879
Project: Kafka
Issue Type: Bug
Components: admin
Affects Versions: 2.6.2, 2.7.1, 2.8.0
Reporter: Tom Bentley
KAFKA-12339 incompatibly changed the semantics of Admin.listOffsets().
Previously it would fail with {{UnknownTopicOrPartitionException}} when a topic
didn't exist. Now it will (eventually) fail with {{TimeoutException}}. It seems
this was more or less intentional, even though it would break code which was
expecting and handling the {{UnknownTopicOrPartitionException}}. A workaround
is to use {{retries=1}} and inspect the cause of the {{TimeoutException}}, but
this isn't really suitable for cases where the same Admin client instance is
being used for other calls where retries is desirable.
Furthermore as well as the intended effect on {{listOffsets()}} it seems that
the change could actually affect other methods of Admin.
More generally, the Admin client API is vague about which exceptions can
propagate from which methods. This means that it's not possible to say, in
cases like this, whether the calling code _should_ have been relying on the
{{UnknownTopicOrPartitionException}} or not.
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