dajac commented on code in PR #17989:
URL: https://github.com/apache/kafka/pull/17989#discussion_r1866509662
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clients/src/test/java/org/apache/kafka/clients/consumer/internals/ConsumerHeartbeatRequestManagerTest.java:
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@@ -602,6 +602,44 @@ public void testHeartbeatResponseOnErrorHandling(final
Errors error, final boole
}
}
+ @Test
+ public void testUnsupportedVersion() {
+ mockErrorResponse(Errors.UNSUPPORTED_VERSION,
Errors.UNSUPPORTED_VERSION.message());
+ ArgumentCaptor<ErrorEvent> errorEventArgumentCaptor =
ArgumentCaptor.forClass(ErrorEvent.class);
+ verify(backgroundEventHandler).add(errorEventArgumentCaptor.capture());
+ ErrorEvent errorEvent = errorEventArgumentCaptor.getValue();
+
+ // UnsupportedApiVersion in HB response without any custom message.
It's considered as new protocol not supported.
+ String hbNotSupportedMsg = "The cluster does not support the new
consumer group protocol. Set group" +
+ ".protocol=classic on the consumer configs to revert to the
classic protocol until the cluster is upgraded.";
+ assertInstanceOf(Errors.UNSUPPORTED_VERSION.exception().getClass(),
errorEvent.error());
+ assertEquals(hbNotSupportedMsg, errorEvent.error().getMessage());
+ clearInvocations(backgroundEventHandler);
+
+ // UnsupportedApiVersion in HB response with custom message. Specific
to required version not present, should
+ // keep the custom message.
+ String hbVersionNotSupportedMsg = "The cluster does not support
resolution of SubscriptionPattern on version 0. " +
Review Comment:
I am sorry but I don’t understand what you mean. On the server, we basically
handle the field if it is provided.
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