FrankYang0529 commented on code in PR #20064:
URL: https://github.com/apache/kafka/pull/20064#discussion_r2173809283
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tools/src/test/java/org/apache/kafka/tools/consumer/group/DescribeConsumerGroupTest.java:
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@@ -1053,6 +1055,64 @@ public void
testDescribeNonOffsetCommitGroup(ClusterInstance clusterInstance) th
}
}
+ /**
+ * The config `OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG` needs to be set to
a value greater than 1 to ensure the
+ * normal invocation of APIs such as `FIND_COORDINATOR` when a broker has
shutdown
+ */
+ @Timeout(60)
+ @ClusterTest(brokers = 3, serverProperties = {@ClusterConfigProperty(key =
OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "2")})
+ public void testDescribeConsumerGroupWithoutLeaders(ClusterInstance
clusterInstance) throws Exception {
+ int brokerNum = 3;
+ this.clusterInstance = clusterInstance;
+
+ // define topic and group, then send 5 records to each partition
+ String topic = TOPIC_PREFIX + UUID.randomUUID();
+ String group = GROUP_PREFIX + UUID.randomUUID();
+ clusterInstance.createTopic(topic, brokerNum, (short) 1);
+ for (int i = 0; i < brokerNum; i++) {
+ sendRecords(topic, i, 5);
+ }
+
+ // append the command
+ List<String> cgcArgs = List.of("--bootstrap-server",
clusterInstance.bootstrapServers(), "--describe", "--group", group,
"--all-topics");
+
+ try (AutoCloseable protocolConsumerGroupExecutor =
consumerGroupClosable(GroupProtocol.CLASSIC, group, topic, Map.of());
+ ConsumerGroupCommand.ConsumerGroupService service =
consumerGroupService(cgcArgs.toArray(new String[0]));
+ Admin admin = clusterInstance.admin()
+ ) {
+ // shutdown the target broker
+ int noneLeaderPartition = 2;
+ int shutdownBrokerId = clusterInstance.getLeaderBrokerId(new
TopicPartition(topic, noneLeaderPartition));
+ clusterInstance.shutdownBroker(shutdownBrokerId);
+
+ TestUtils.waitForCondition(() -> {
+ Entry<String, String> res =
ToolsTestUtils.grabConsoleOutputAndError(describeGroups(service));
+ String[] lines = res.getKey().trim().split("\n");
+ if (lines.length != 4 || !res.getValue().isEmpty()) {
+ return false;
+ }
+
+ // get the client data, such as `consumerId,host,clientId`, to
append the expected output
+ ConsumerGroupDescription consumerGroupDescription =
admin.describeConsumerGroups(Set.of(group)).describedGroups().get(group).get();
+ MemberDescription memberDescription =
consumerGroupDescription.members().iterator().next();
+ String consumerId = memberDescription.consumerId();
+ String host = memberDescription.host();
+ String clientId = memberDescription.clientId();
+
+ // the expected output
+ List<String> partition0content = List.of(group, topic, "0",
"5", "5", "0", consumerId, host, clientId);
+ List<String> partition1content = List.of(group, topic, "1",
"5", "5", "0", consumerId, host, clientId);
+ List<String> partition2content = List.of(group, topic, "2",
"-", "-", "-", consumerId, host, clientId);
+
+ return checkArgsHeaderOutput(cgcArgs, lines[0])
+ &&
Arrays.stream(lines[1].trim().split("\\s+")).toList().equals(partition0content)
+ &&
Arrays.stream(lines[2].trim().split("\\s+")).toList().equals(partition1content)
+ &&
Arrays.stream(lines[3].trim().split("\\s+")).toList().equals(partition2content);
+ }, "Expected a data row and no error in describe groups when a
broker shutdown.");
Review Comment:
IIUC, the topic has 3 partitions, so there're 3 data rows.
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