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Posted to jira@kafka.apache.org by "rreddy-22 (via GitHub)" <gi...@apache.org> on 2023/05/02 15:32:26 UTC
[GitHub] [kafka] rreddy-22 commented on a diff in pull request #13443: KAFKA-14514: Add Range Assignor on the Server (KIP-848)
rreddy-22 commented on code in PR #13443:
URL: https://github.com/apache/kafka/pull/13443#discussion_r1182715705
##########
group-coordinator/src/test/java/org/apache/kafka/coordinator/group/assignor/RangeAssignorTest.java:
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@@ -0,0 +1,574 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kafka.coordinator.group.assignor;
+
+import org.apache.kafka.common.Uuid;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class RangeAssignorTest {
+ private final RangeAssignor assignor = new RangeAssignor();
+ private final Uuid topic1Uuid = Uuid.randomUuid();
+ private final Uuid topic2Uuid = Uuid.randomUuid();
+ private final Uuid topic3Uuid = Uuid.randomUuid();
+ private final String consumerA = "A";
+ private final String consumerB = "B";
+ private final String consumerC = "C";
+
+ @Test
+ public void testOneConsumerNoTopic() {
+ Map<Uuid, AssignmentTopicMetadata> topics = Collections.singletonMap(topic1Uuid, new AssignmentTopicMetadata(3));
+ Map<String, AssignmentMemberSpec> members = Collections.singletonMap(
+ consumerA,
+ new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Collections.emptyList(),
+ Collections.emptyMap())
+ );
+
+ AssignmentSpec assignmentSpec = new AssignmentSpec(members, topics);
+ GroupAssignment groupAssignment = assignor.assign(assignmentSpec);
+
+ assertTrue(groupAssignment.members().isEmpty());
+ }
+
+ @Test
+ public void testOneConsumerNonExistentTopic() {
+ Map<Uuid, AssignmentTopicMetadata> topics = Collections.singletonMap(topic1Uuid, new AssignmentTopicMetadata(3));
+ Map<String, AssignmentMemberSpec> members = Collections.singletonMap(
+ consumerA,
+ new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Collections.singletonList(topic2Uuid),
+ Collections.emptyMap())
+ );
+
+ AssignmentSpec assignmentSpec = new AssignmentSpec(members, topics);
+ GroupAssignment groupAssignment = assignor.assign(assignmentSpec);
+
+ assertTrue(groupAssignment.members().isEmpty());
+ }
+
+ @Test
+ public void testFirstAssignmentTwoConsumersTwoTopicsSameSubscriptions() {
+ Map<Uuid, AssignmentTopicMetadata> topics = new HashMap<>();
+ topics.put(topic1Uuid, new AssignmentTopicMetadata(3));
+ topics.put(topic3Uuid, new AssignmentTopicMetadata(2));
+
+ Map<String, AssignmentMemberSpec> members = new HashMap<>();
+ // Initial Subscriptions are: A -> T1, T3 | B -> T1, T3
+
+ members.put(consumerA, new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Arrays.asList(topic1Uuid, topic3Uuid),
+ Collections.emptyMap())
+ );
+
+ members.put(consumerB, new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Arrays.asList(topic1Uuid, topic3Uuid),
+ Collections.emptyMap())
+ );
+
+ AssignmentSpec assignmentSpec = new AssignmentSpec(members, topics);
+ GroupAssignment computedAssignment = assignor.assign(assignmentSpec);
+
+ Map<Uuid, Set<Set<Integer>>> expectedAssignment = new HashMap<>();
+ // Topic 1 Partitions Assignment
+ mkAssignment(expectedAssignment, topic1Uuid, Arrays.asList(0, 1));
+ mkAssignment(expectedAssignment, topic1Uuid, Collections.singleton(2));
+ // Topic 3 Partitions Assignment
+ mkAssignment(expectedAssignment, topic3Uuid, Collections.singleton(0));
+ mkAssignment(expectedAssignment, topic3Uuid, Collections.singleton(1));
+
+ assertAssignment(expectedAssignment, computedAssignment);
+ }
+
+ @Test
+ public void testFirstAssignmentThreeConsumersThreeTopicsDifferentSubscriptions() {
+ Map<Uuid, AssignmentTopicMetadata> topics = new HashMap<>();
+ topics.put(topic1Uuid, new AssignmentTopicMetadata(3));
+ topics.put(topic2Uuid, new AssignmentTopicMetadata(3));
+ topics.put(topic3Uuid, new AssignmentTopicMetadata(2));
+
+ Map<String, AssignmentMemberSpec> members = new HashMap<>();
+ // Initial Subscriptions: A -> T1, T2 | B -> T3 | C -> T2, T3
+
+ members.put(consumerA, new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Arrays.asList(topic1Uuid, topic2Uuid),
+ Collections.emptyMap())
+ );
+
+ members.put(consumerB, new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Collections.singletonList(topic3Uuid),
+ Collections.emptyMap())
+ );
+
+ members.put(consumerC, new AssignmentMemberSpec(
+ Optional.empty(),
+ Optional.empty(),
+ Arrays.asList(topic2Uuid, topic3Uuid),
+ Collections.emptyMap())
+ );
+
+ AssignmentSpec assignmentSpec = new AssignmentSpec(members, topics);
+ GroupAssignment computedAssignment = assignor.assign(assignmentSpec);
+
+ Map<Uuid, Set<Set<Integer>>> expectedAssignment = new HashMap<>();
+ // Topic 1 Partitions Assignment
+ mkAssignment(expectedAssignment, topic1Uuid, Arrays.asList(0, 1, 2));
+ // Topic 2 Partitions Assignment
+ mkAssignment(expectedAssignment, topic2Uuid, Arrays.asList(0, 1));
+ mkAssignment(expectedAssignment, topic2Uuid, Collections.singleton(2));
+ // Topic 3 Partitions Assignment
+ mkAssignment(expectedAssignment, topic3Uuid, Collections.singleton(0));
+ mkAssignment(expectedAssignment, topic3Uuid, Collections.singleton(1));
+
+ assertAssignment(expectedAssignment, computedAssignment);
Review Comment:
changing it
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