See also https://github.com/apache/pulsar/issues/20661
Enrico and I both verified that it works well locally, so that can be an env issue or unstable dependency - I checked the ES image not changed, though. If we cannot locate the cause quickly, perhaps disable the test to unblock other PRs first? I tried to read the code, but there is no trivial cause (even the test passed locally). The log indicates that statistics received one message instead of 20 expected, but as other test cases passed, it may not be a kernel logic issue. Best, tison.