suzhiking commented on PR #23146:
URL: https://github.com/apache/kafka/pull/23146#issuecomment-5274237600
Ducktape results (local `ducker-ak`, linux/aarch64 containers, JDK 17):
```
SESSION REPORT (ALL TESTS)
session_id: 2026-08-12--003
run time: 7 minutes 23.643 seconds
tests run: 20
passed: 19
failed: 1
```
All 15 cases of the new `streams_protocol_cross_version_test.py` and the new
`test_no_push_solicited_by_old_broker` (2 cases) passed.
The single failure was the pre-existing
`StreamsTopologyDescriptionPluginTest.test_topology_description_not_stored_when_client_opts_out`
("Broker never solicited a topology push"), which passed on an immediate
rerun. It looks like a startup race in the solicitation timing
(`StreamsGroupTopologyDescriptionManager#maybeSetTopologyDescriptionRequired`
has several early-return guards while the topology initializes), not something
introduced here — this PR only adds an optional `broker_version` parameter to
that suite's `setup_kafka`, defaulting to the previous behavior, and the
sibling test exercising the same solicitation path passed in the same session.
One fix was folded in after the first run: the `UnsupportedVersionException`
guard now excludes the benign KIP-714 telemetry probe (`The node does not
support GET_TELEMETRY_SUBSCRIPTIONS`), which the client logs at DEBUG against
brokers of every version — including dev — when no client-metrics receiver is
configured.
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