adixitconfluent commented on code in PR #16263: URL: https://github.com/apache/kafka/pull/16263#discussion_r1638419050
########## core/src/test/java/kafka/server/share/SharePartitionManagerTest.java: ########## @@ -0,0 +1,936 @@ +/* + * 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 kafka.server.share; + +import kafka.server.ReplicaManager; +import org.apache.kafka.common.TopicIdPartition; +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.errors.InvalidRequestException; +import org.apache.kafka.common.errors.InvalidShareSessionEpochException; +import org.apache.kafka.common.errors.ShareSessionNotFoundException; +import org.apache.kafka.common.message.ShareFetchResponseData; +import org.apache.kafka.common.protocol.ApiKeys; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.protocol.ObjectSerializationCache; +import org.apache.kafka.common.requests.ShareFetchMetadata; +import org.apache.kafka.common.requests.ShareFetchRequest; +import org.apache.kafka.common.requests.ShareFetchResponse; +import org.apache.kafka.common.utils.MockTime; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.share.ShareSessionCache; +import org.apache.kafka.server.share.ShareSessionKey; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.Timeout; + +import java.util.HashMap; +import java.util.HashSet; +import java.util.Collections; +import java.util.List; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Map; +import java.util.LinkedHashMap; +import java.util.Set; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNotEquals; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; +import static org.mockito.Mockito.mock; + +@Timeout(120) +public class SharePartitionManagerTest { + + private static final int RECORD_LOCK_DURATION_MS = 30000; + private static final int MAX_DELIVERY_COUNT = 5; + private static final short MAX_IN_FLIGHT_MESSAGES = 200; + + private static final List<TopicIdPartition> EMPTY_PART_LIST = Collections.unmodifiableList(new ArrayList<>()); + + @Test + public void testNewContextReturnsFinalContext() { + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder().build(); + + ShareFetchMetadata newReqMetadata = new ShareFetchMetadata(Uuid.ZERO_UUID, -1); + ShareFetchContext shareFetchContext = sharePartitionManager.newContext("grp", Collections.emptyMap(), Collections.emptyList(), newReqMetadata); + assertEquals(FinalContext.class, shareFetchContext.getClass()); + + // If the final fetch request has topics to add, it should fail as an invalid request + Uuid topicId = Uuid.randomUuid(); + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> shareFetchData = Collections.singletonMap( + new TopicIdPartition(topicId, new TopicPartition("foo", 0)), + new ShareFetchRequest.SharePartitionData(topicId, 4000)); + assertThrows(InvalidRequestException.class, + () -> sharePartitionManager.newContext("grp", shareFetchData, Collections.emptyList(), new ShareFetchMetadata(Uuid.ZERO_UUID, -1))); + + // shareFetchData is not empty, but the maxBytes of topic partition is 0, which means this is added only for acknowledgements. + // New context should be created successfully + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> shareFetchData2 = Collections.singletonMap(new TopicIdPartition(topicId, new TopicPartition("foo", 0)), + new ShareFetchRequest.SharePartitionData(topicId, 0)); + shareFetchContext = sharePartitionManager.newContext("grp", shareFetchData2, Collections.emptyList(), newReqMetadata); + assertEquals(FinalContext.class, shareFetchContext.getClass()); + } + + @Test + public void testNewContextReturnsFinalContextForEmptyTopicPartitionsAndFinalEpoch() { + Time time = new MockTime(); + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).withTime(time).build(); + String groupId = "grp"; + // Verify that final epoch requests get a FinalContext + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.FINAL_EPOCH)); + assertEquals(FinalContext.class, context1.getClass()); + } + + @Test + public void testNewContext() { + Time time = new MockTime(); + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).withTime(time).build(); + Map<Uuid, String> topicNames = new HashMap<>(); + Uuid tpId0 = Uuid.randomUuid(); + Uuid tpId1 = Uuid.randomUuid(); + topicNames.put(tpId0, "foo"); + topicNames.put(tpId1, "bar"); + TopicIdPartition tp0 = new TopicIdPartition(tpId0, new TopicPartition("foo", 0)); + TopicIdPartition tp1 = new TopicIdPartition(tpId0, new TopicPartition("foo", 1)); + TopicIdPartition tp2 = new TopicIdPartition(tpId1, new TopicPartition("bar", 0)); + TopicIdPartition tp3 = new TopicIdPartition(tpId1, new TopicPartition("bar", 1)); + + String groupId = "grp"; + + // Create a new share session with an initial share fetch request + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData2 = new LinkedHashMap<>(); + reqData2.put(tp0, new ShareFetchRequest.SharePartitionData(tp0.topicId(), 100)); + reqData2.put(tp1, new ShareFetchRequest.SharePartitionData(tp1.topicId(), 100)); + + + ShareFetchMetadata reqMetadata2 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, reqMetadata2); + assertEquals(ShareSessionContext.class, context2.getClass()); + assertFalse(((ShareSessionContext) context2).isSubsequent()); + + ((ShareSessionContext) context2).shareFetchData().forEach((topicIdPartition, sharePartitionData) -> { + assertTrue(reqData2.containsKey(topicIdPartition)); + assertEquals(reqData2.get(topicIdPartition), sharePartitionData); + }); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(tp0, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + respData2.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + assertEquals(respData2, resp2.responseData(topicNames)); + + ShareSessionKey shareSessionKey2 = new ShareSessionKey(groupId, + reqMetadata2.memberId()); + + // Test trying to create a new session with an invalid epoch + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test trying to create a new session with a non-existent session key + Uuid memberId4 = Uuid.randomUuid(); + assertThrows(ShareSessionNotFoundException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(memberId4, 1))); + + // Continue the first share session we created. + ShareFetchContext context5 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 1)); + assertEquals(context5.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context5).isSubsequent()); + + ShareSessionContext shareSessionContext5 = (ShareSessionContext) context5; + synchronized (shareSessionContext5.session()) { + shareSessionContext5.session().partitionMap().forEach(cachedSharePartition -> { + TopicIdPartition topicIdPartition = new TopicIdPartition(cachedSharePartition.topicId(), new + TopicPartition(cachedSharePartition.topic(), cachedSharePartition.partition())); + ShareFetchRequest.SharePartitionData data = cachedSharePartition.reqData(); + assertTrue(reqData2.containsKey(topicIdPartition)); + assertEquals(reqData2.get(topicIdPartition), data); + }); + } + ShareFetchResponse resp5 = context5.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp5.error()); + assertEquals(0, resp5.responseData(topicNames).size()); + + // Test setting an invalid share session epoch. + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test generating a throttled response for a subsequent share session + ShareFetchContext context7 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 2)); + ShareFetchResponse resp7 = context7.throttleResponse(100); + assertEquals(Errors.NONE, resp7.error()); + assertEquals(100, resp7.throttleTimeMs()); + + // Close the subsequent share session. + ShareFetchContext context8 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata2.memberId(), ShareFetchMetadata.FINAL_EPOCH)); + assertEquals(FinalContext.class, context8.getClass()); + assertEquals(0, cache.size()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData8 = new LinkedHashMap<>(); + respData8.put(tp2, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + respData8.put(tp3, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + + ShareFetchResponse resp8 = context8.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData8); + assertEquals(Errors.NONE, resp8.error()); + } + + @Test + public void testShareSessionExpiration() { + Time time = new MockTime(); + ShareSessionCache cache = new ShareSessionCache(2, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).withTime(time).build(); + Map<Uuid, String> topicNames = new HashMap<>(); + Uuid fooId = Uuid.randomUuid(); + topicNames.put(fooId, "foo"); + TopicIdPartition foo0 = new TopicIdPartition(fooId, new TopicPartition("foo", 0)); + TopicIdPartition foo1 = new TopicIdPartition(fooId, new TopicPartition("foo", 1)); + + // Create a new share session, session 1 + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> session1req = new LinkedHashMap<>(); + session1req.put(foo0, new ShareFetchRequest.SharePartitionData(foo0.topicId(), 100)); + session1req.put(foo1, new ShareFetchRequest.SharePartitionData(foo1.topicId(), 100)); + + String groupId = "grp"; + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + ShareFetchContext session1context = sharePartitionManager.newContext(groupId, session1req, EMPTY_PART_LIST, reqMetadata1); + assertEquals(session1context.getClass(), ShareSessionContext.class); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData1 = new LinkedHashMap<>(); + respData1.put(foo0, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo0.partition())); + respData1.put(foo1, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo1.partition())); + + ShareFetchResponse session1resp = session1context.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData1); + assertEquals(Errors.NONE, session1resp.error()); + assertEquals(2, session1resp.responseData(topicNames).size()); + + ShareSessionKey session1Key = new ShareSessionKey(groupId, reqMetadata1.memberId()); + // check share session entered into cache + assertNotNull(cache.get(session1Key)); + + time.sleep(500); + + // Create a second new share session + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> session2req = new LinkedHashMap<>(); + session2req.put(foo0, new ShareFetchRequest.SharePartitionData(foo0.topicId(), 100)); + session2req.put(foo1, new ShareFetchRequest.SharePartitionData(foo1.topicId(), 100)); + + ShareFetchMetadata reqMetadata2 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + ShareFetchContext session2context = sharePartitionManager.newContext(groupId, session2req, EMPTY_PART_LIST, reqMetadata2); + assertEquals(session2context.getClass(), ShareSessionContext.class); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(foo0, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo0.partition())); + respData2.put(foo1, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo1.partition())); + + ShareFetchResponse session2resp = session2context.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, session2resp.error()); + assertEquals(2, session2resp.responseData(topicNames).size()); + + ShareSessionKey session2Key = new ShareSessionKey(groupId, reqMetadata2.memberId()); + + // both newly created entries are present in cache + assertNotNull(cache.get(session1Key)); + assertNotNull(cache.get(session2Key)); + + time.sleep(500); + + // Create a subsequent share fetch context for session 1 + ShareFetchContext session1context2 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata1.memberId(), 1)); + assertEquals(session1context2.getClass(), ShareSessionContext.class); + + // total sleep time will now be large enough that share session 1 will be evicted if not correctly touched + time.sleep(501); + + // create one final share session to test that the least recently used entry is evicted + // the second share session should be evicted because the first share session was incrementally fetched + // more recently than the second session was created + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> session3req = new LinkedHashMap<>(); + session3req.put(foo0, new ShareFetchRequest.SharePartitionData(foo0.topicId(), 100)); + session3req.put(foo1, new ShareFetchRequest.SharePartitionData(foo1.topicId(), 100)); + + ShareFetchMetadata reqMetadata3 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + ShareFetchContext session3context = sharePartitionManager.newContext(groupId, session3req, EMPTY_PART_LIST, reqMetadata3); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData3 = new LinkedHashMap<>(); + respData3.put(foo0, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo0.partition())); + respData3.put(foo1, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo1.partition())); + + ShareFetchResponse session3resp = session3context.updateAndGenerateResponseData(groupId, reqMetadata3.memberId(), respData3); + assertEquals(Errors.NONE, session3resp.error()); + assertEquals(2, session3resp.responseData(topicNames).size()); + + ShareSessionKey session3Key = new ShareSessionKey(groupId, reqMetadata3.memberId()); + + assertNotNull(cache.get(session1Key)); + assertNull(cache.get(session2Key), "share session 2 should have been evicted by latest share session, " + + "as share session 1 was used more recently"); + assertNotNull(cache.get(session3Key)); + } + + @Test + public void testSubsequentShareSession() { + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder().build(); + Map<Uuid, String> topicNames = new HashMap<>(); + Uuid fooId = Uuid.randomUuid(); + Uuid barId = Uuid.randomUuid(); + topicNames.put(fooId, "foo"); + topicNames.put(barId, "bar"); + TopicIdPartition tp0 = new TopicIdPartition(fooId, new TopicPartition("foo", 0)); + TopicIdPartition tp1 = new TopicIdPartition(fooId, new TopicPartition("foo", 1)); + TopicIdPartition tp2 = new TopicIdPartition(barId, new TopicPartition("bar", 0)); + + // Create a new share session with foo-0 and foo-1 + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData1 = new LinkedHashMap<>(); + reqData1.put(tp0, new ShareFetchRequest.SharePartitionData(tp0.topicId(), 100)); + reqData1.put(tp1, new ShareFetchRequest.SharePartitionData(tp1.topicId(), 100)); + + String groupId = "grp"; + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, reqData1, EMPTY_PART_LIST, reqMetadata1); + assertEquals(context1.getClass(), ShareSessionContext.class); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData1 = new LinkedHashMap<>(); + respData1.put(tp0, new ShareFetchResponseData.PartitionData().setPartitionIndex(tp0.partition())); + respData1.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(tp1.partition())); + + ShareFetchResponse resp1 = context1.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData1); + assertEquals(Errors.NONE, resp1.error()); + assertEquals(2, resp1.responseData(topicNames).size()); + + // Create a subsequent fetch request that removes foo-0 and adds bar-0 + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData2 = Collections.singletonMap( + tp2, new ShareFetchRequest.SharePartitionData(tp2.topicId(), 100)); + List<TopicIdPartition> removed2 = new ArrayList<>(); + removed2.add(tp0); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, reqData2, removed2, + new ShareFetchMetadata(reqMetadata1.memberId(), 1)); + assertEquals(context2.getClass(), ShareSessionContext.class); + + Set<TopicIdPartition> expectedTopicIdPartitions2 = new HashSet<>(); + expectedTopicIdPartitions2.add(tp1); + expectedTopicIdPartitions2.add(tp2); + Set<TopicIdPartition> actualTopicIdPartitions2 = new HashSet<>(); + ShareSessionContext shareSessionContext = (ShareSessionContext) context2; + shareSessionContext.session().partitionMap().forEach(cachedSharePartition -> { + TopicIdPartition topicIdPartition = new TopicIdPartition(cachedSharePartition.topicId(), new + TopicPartition(cachedSharePartition.topic(), cachedSharePartition.partition())); + actualTopicIdPartitions2.add(topicIdPartition); + }); + + assertEquals(expectedTopicIdPartitions2, actualTopicIdPartitions2); + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(tp1.partition())); + respData2.put(tp2, new ShareFetchResponseData.PartitionData().setPartitionIndex(tp2.partition())); + + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + assertEquals(1, resp2.data().responses().size()); + assertEquals(barId, resp2.data().responses().get(0).topicId()); + assertEquals(1, resp2.data().responses().get(0).partitions().size()); + assertEquals(0, resp2.data().responses().get(0).partitions().get(0).partitionIndex()); + assertEquals(1, resp2.responseData(topicNames).size()); + } + + @Test + public void testZeroSizeShareSession() { + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).build(); + Map<Uuid, String> topicNames = new HashMap<>(); + Uuid fooId = Uuid.randomUuid(); + topicNames.put(fooId, "foo"); + TopicIdPartition foo0 = new TopicIdPartition(fooId, new TopicPartition("foo", 0)); + TopicIdPartition foo1 = new TopicIdPartition(fooId, new TopicPartition("foo", 1)); + + // Create a new share session with foo-0 and foo-1 + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData1 = new LinkedHashMap<>(); + reqData1.put(foo0, new ShareFetchRequest.SharePartitionData(foo0.topicId(), 100)); + reqData1.put(foo1, new ShareFetchRequest.SharePartitionData(foo1.topicId(), 100)); + + String groupId = "grp"; + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, reqData1, EMPTY_PART_LIST, reqMetadata1); + assertEquals(context1.getClass(), ShareSessionContext.class); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData1 = new LinkedHashMap<>(); + respData1.put(foo0, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo0.partition())); + respData1.put(foo1, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo1.partition())); + + ShareFetchResponse resp1 = context1.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData1); + assertEquals(Errors.NONE, resp1.error()); + assertEquals(2, resp1.responseData(topicNames).size()); + + // Create a subsequent share request that removes foo-0 and foo-1 + // Verify that the previous share session was closed. + List<TopicIdPartition> removed2 = new ArrayList<>(); + removed2.add(foo0); + removed2.add(foo1); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), removed2, + new ShareFetchMetadata(reqMetadata1.memberId(), 1)); + assertEquals(context2.getClass(), ShareSessionContext.class); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData2); + assertTrue(resp2.responseData(topicNames).isEmpty()); + assertEquals(1, cache.size()); + } + + @Test + public void testToForgetPartitions() { + String groupId = "grp"; + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).build(); + Uuid fooId = Uuid.randomUuid(); + Uuid barId = Uuid.randomUuid(); + TopicIdPartition foo = new TopicIdPartition(fooId, new TopicPartition("foo", 0)); + TopicIdPartition bar = new TopicIdPartition(barId, new TopicPartition("bar", 0)); + + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData1 = new LinkedHashMap<>(); + reqData1.put(foo, new ShareFetchRequest.SharePartitionData(foo.topicId(), 100)); + reqData1.put(bar, new ShareFetchRequest.SharePartitionData(bar.topicId(), 100)); + + + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, reqData1, EMPTY_PART_LIST, reqMetadata1); + assertEquals(ShareSessionContext.class, context1.getClass()); + assertPartitionsPresent((ShareSessionContext) context1, Arrays.asList(foo, bar)); + + mockUpdateAndGenerateResponseData(context1, groupId, reqMetadata1.memberId()); + + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), Collections.singletonList(foo), + new ShareFetchMetadata(reqMetadata1.memberId(), 1)); + + // So foo is removed but not the others. + assertPartitionsPresent((ShareSessionContext) context2, Collections.singletonList(bar)); + + mockUpdateAndGenerateResponseData(context2, groupId, reqMetadata1.memberId()); + + ShareFetchContext context3 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), Collections.singletonList(bar), + new ShareFetchMetadata(reqMetadata1.memberId(), 2)); + assertPartitionsPresent((ShareSessionContext) context3, Collections.emptyList()); + } + + // This test simulates a share session where the topic ID changes broker side (the one handling the request) in both the metadata cache and the log + // -- as though the topic is deleted and recreated. + @Test + public void testShareSessionUpdateTopicIdsBrokerSide() { + String groupId = "grp"; + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).build(); + Uuid fooId = Uuid.randomUuid(); + Uuid barId = Uuid.randomUuid(); + TopicIdPartition foo = new TopicIdPartition(fooId, new TopicPartition("foo", 0)); + TopicIdPartition bar = new TopicIdPartition(barId, new TopicPartition("bar", 1)); + + Map<Uuid, String> topicNames = new HashMap<>(); + topicNames.put(fooId, "foo"); + topicNames.put(barId, "bar"); + + // Create a new share session with foo-0 and bar-1 + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData1 = new LinkedHashMap<>(); + reqData1.put(foo, new ShareFetchRequest.SharePartitionData(foo.topicId(), 100)); + reqData1.put(bar, new ShareFetchRequest.SharePartitionData(bar.topicId(), 100)); + + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, reqData1, EMPTY_PART_LIST, reqMetadata1); + + assertEquals(ShareSessionContext.class, context1.getClass()); + assertFalse(((ShareSessionContext) context1).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData1 = new LinkedHashMap<>(); + respData1.put(bar, new ShareFetchResponseData.PartitionData().setPartitionIndex(bar.partition())); + respData1.put(foo, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo.partition()).setErrorCode( + Errors.UNKNOWN_TOPIC_OR_PARTITION.code())); + + ShareFetchResponse resp1 = context1.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData1); + assertEquals(Errors.NONE, resp1.error()); + assertEquals(2, resp1.responseData(topicNames).size()); + + // Create a subsequent share fetch request as though no topics changed. + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata1.memberId(), 1)); + + assertEquals(ShareSessionContext.class, context2.getClass()); + assertTrue(((ShareSessionContext) context2).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + // Likely if the topic ID is different in the broker, it will be different in the log. Simulate the log check finding an inconsistent ID. + respData2.put(foo, new ShareFetchResponseData.PartitionData().setPartitionIndex(foo.partition()).setErrorCode( + Errors.INCONSISTENT_TOPIC_ID.code())); + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + // We should have the inconsistent topic ID error on the partition + assertEquals(Errors.INCONSISTENT_TOPIC_ID.code(), resp2.responseData(topicNames).get(foo).errorCode()); + } + + @Test + public void testGetErroneousAndValidTopicIdPartitions() { + Time time = new MockTime(); + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).withTime(time).build(); + Uuid tpId0 = Uuid.randomUuid(); + Uuid tpId2 = Uuid.randomUuid(); + Uuid tpId3 = Uuid.randomUuid(); + TopicIdPartition tp0 = new TopicIdPartition(tpId0, new TopicPartition("foo", 0)); + TopicIdPartition tp1 = new TopicIdPartition(tpId0, new TopicPartition("foo", 1)); + TopicIdPartition tpNull1 = new TopicIdPartition(tpId2, new TopicPartition(null, 0)); + TopicIdPartition tpNull2 = new TopicIdPartition(tpId3, new TopicPartition(null, 1)); + + String groupId = "grp"; + + // Create a new share session with an initial share fetch request + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData2 = new LinkedHashMap<>(); + reqData2.put(tp0, new ShareFetchRequest.SharePartitionData(tp0.topicId(), 100)); + reqData2.put(tp1, new ShareFetchRequest.SharePartitionData(tp1.topicId(), 100)); + reqData2.put(tpNull1, new ShareFetchRequest.SharePartitionData(tpNull1.topicId(), 100)); + + + ShareFetchMetadata reqMetadata2 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, reqMetadata2); + assertEquals(context2.getClass(), ShareSessionContext.class); + assertFalse(((ShareSessionContext) context2).isSubsequent()); + assertErroneousAndValidTopicIdPartitions(context2.getErroneousAndValidTopicIdPartitions(), Collections.singletonList(tpNull1), Arrays.asList(tp0, tp1)); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(tp0, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + respData2.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + respData2.put(tpNull1, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + + ShareSessionKey shareSessionKey2 = new ShareSessionKey(groupId, + reqMetadata2.memberId()); + + // Check for throttled response + ShareFetchResponse resp2Throttle = context2.throttleResponse(100); + assertEquals(Errors.NONE, resp2Throttle.error()); + assertEquals(100, resp2Throttle.throttleTimeMs()); + + // Test trying to create a new session with an invalid epoch + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test trying to create a new session with a non-existent session key + Uuid memberId4 = Uuid.randomUuid(); + + assertThrows(ShareSessionNotFoundException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(memberId4, 1))); + + // Continue the first share session we created. + ShareFetchContext context5 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 1)); + assertEquals(context5.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context5).isSubsequent()); + + assertErroneousAndValidTopicIdPartitions(context5.getErroneousAndValidTopicIdPartitions(), Collections.singletonList(tpNull1), Arrays.asList(tp0, tp1)); + + ShareFetchResponse resp5 = context5.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp5.error()); + + // Test setting an invalid share session epoch. + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test generating a throttled response for a subsequent share session + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData7 = Collections.singletonMap( + tpNull2, new ShareFetchRequest.SharePartitionData(tpNull2.topicId(), 100)); + ShareFetchContext context7 = sharePartitionManager.newContext(groupId, reqData7, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 2)); + // Check for throttled response + ShareFetchResponse resp7 = context7.throttleResponse(100); + assertEquals(Errors.NONE, resp7.error()); + assertEquals(100, resp7.throttleTimeMs()); + + assertErroneousAndValidTopicIdPartitions(context7.getErroneousAndValidTopicIdPartitions(), Arrays.asList(tpNull1, tpNull2), Arrays.asList(tp0, tp1)); + + // Close the subsequent share session. + ShareFetchContext context8 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata2.memberId(), ShareFetchMetadata.FINAL_EPOCH)); + assertEquals(FinalContext.class, context8.getClass()); + assertEquals(0, cache.size()); + + + assertErroneousAndValidTopicIdPartitions(context8.getErroneousAndValidTopicIdPartitions(), Collections.emptyList(), Collections.emptyList()); + // Check for throttled response + ShareFetchResponse resp8 = context8.throttleResponse(100); + assertEquals(Errors.NONE, resp8.error()); + assertEquals(100, resp8.throttleTimeMs()); + } + + @Test + public void testShareFetchContextResponseSize() { + Time time = new MockTime(); + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).withTime(time).build(); + Map<Uuid, String> topicNames = new HashMap<>(); + Uuid tpId0 = Uuid.randomUuid(); + Uuid tpId1 = Uuid.randomUuid(); + topicNames.put(tpId0, "foo"); + topicNames.put(tpId1, "bar"); + TopicIdPartition tp0 = new TopicIdPartition(tpId0, new TopicPartition("foo", 0)); + TopicIdPartition tp1 = new TopicIdPartition(tpId0, new TopicPartition("foo", 1)); + TopicIdPartition tp2 = new TopicIdPartition(tpId1, new TopicPartition("bar", 0)); + TopicIdPartition tp3 = new TopicIdPartition(tpId1, new TopicPartition("bar", 1)); + + String groupId = "grp"; + + // Create a new share session with an initial share fetch request + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData2 = new LinkedHashMap<>(); + reqData2.put(tp0, new ShareFetchRequest.SharePartitionData(tp0.topicId(), 100)); + reqData2.put(tp1, new ShareFetchRequest.SharePartitionData(tp1.topicId(), 100)); + + // For response size expected value calculation + ObjectSerializationCache objectSerializationCache = new ObjectSerializationCache(); + short version = ApiKeys.SHARE_FETCH.latestVersion(); + + ShareFetchMetadata reqMetadata2 = new ShareFetchMetadata(Uuid.randomUuid(), ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, reqMetadata2); + assertEquals(context2.getClass(), ShareSessionContext.class); + assertFalse(((ShareSessionContext) context2).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(tp0, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + respData2.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + + int respSize2 = context2.responseSize(respData2, version); + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + assertEquals(respData2, resp2.responseData(topicNames)); + assertEquals(4 + resp2.data().size(objectSerializationCache, version), respSize2); + + ShareSessionKey shareSessionKey2 = new ShareSessionKey(groupId, + reqMetadata2.memberId()); + + // Test trying to create a new session with an invalid epoch + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test trying to create a new session with a non-existent session key + Uuid memberId4 = Uuid.randomUuid(); + assertThrows(ShareSessionNotFoundException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(memberId4, 1))); + + // Continue the first share session we created. + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData5 = Collections.singletonMap( + tp2, new ShareFetchRequest.SharePartitionData(tp2.topicId(), 100)); + ShareFetchContext context5 = sharePartitionManager.newContext(groupId, reqData5, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 1)); + assertEquals(context5.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context5).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData5 = new LinkedHashMap<>(); + respData5.put(tp2, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + + int respSize5 = context5.responseSize(respData5, version); + ShareFetchResponse resp5 = context5.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData5); + assertEquals(Errors.NONE, resp5.error()); + assertEquals(4 + resp5.data().size(objectSerializationCache, version), respSize5); + + // Test setting an invalid share session epoch. + assertThrows(InvalidShareSessionEpochException.class, () -> sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 5))); + + // Test generating a throttled response for a subsequent share session + ShareFetchContext context7 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey2.memberId(), 2)); + + int respSize7 = context7.responseSize(respData2, version); + ShareFetchResponse resp7 = context7.throttleResponse(100); + assertEquals(Errors.NONE, resp7.error()); + assertEquals(100, resp7.throttleTimeMs()); + assertEquals(4 + new ShareFetchResponseData().size(objectSerializationCache, version), respSize7); + + // Close the subsequent share session. + ShareFetchContext context8 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata2.memberId(), ShareFetchMetadata.FINAL_EPOCH)); + assertEquals(FinalContext.class, context8.getClass()); + assertEquals(0, cache.size()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData8 = new LinkedHashMap<>(); + respData8.put(tp3, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + + int respSize8 = context8.responseSize(respData8, version); + ShareFetchResponse resp8 = context8.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData8); + assertEquals(Errors.NONE, resp8.error()); + assertEquals(4 + resp8.data().size(objectSerializationCache, version), respSize8); + } + + @Test + public void testCachedTopicPartitionsForInvalidShareSession() { + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).build(); + + assertThrows(ShareSessionNotFoundException.class, () -> sharePartitionManager.cachedTopicIdPartitionsInShareSession("grp", Uuid.randomUuid())); + } + + @Test + public void testCachedTopicPartitionsForValidShareSessions() { + ShareSessionCache cache = new ShareSessionCache(10, 1000); + SharePartitionManager sharePartitionManager = SharePartitionManagerBuilder.builder() + .withCache(cache).build(); + Uuid tpId0 = Uuid.randomUuid(); + Uuid tpId1 = Uuid.randomUuid(); + TopicIdPartition tp0 = new TopicIdPartition(tpId0, new TopicPartition("foo", 0)); + TopicIdPartition tp1 = new TopicIdPartition(tpId0, new TopicPartition("foo", 1)); + TopicIdPartition tp2 = new TopicIdPartition(tpId1, new TopicPartition("bar", 0)); + TopicIdPartition tp3 = new TopicIdPartition(tpId1, new TopicPartition("bar", 1)); + String groupId = "grp"; + Uuid memberId1 = Uuid.randomUuid(); + Uuid memberId2 = Uuid.randomUuid(); + + // Create a new share session with an initial share fetch request. + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData1 = new LinkedHashMap<>(); + reqData1.put(tp0, new ShareFetchRequest.SharePartitionData(tp0.topicId(), 100)); + reqData1.put(tp1, new ShareFetchRequest.SharePartitionData(tp1.topicId(), 100)); + + ShareFetchMetadata reqMetadata1 = new ShareFetchMetadata(memberId1, ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context1 = sharePartitionManager.newContext(groupId, reqData1, EMPTY_PART_LIST, reqMetadata1); + assertEquals(context1.getClass(), ShareSessionContext.class); + assertFalse(((ShareSessionContext) context1).isSubsequent()); + + ShareSessionKey shareSessionKey1 = new ShareSessionKey(groupId, + reqMetadata1.memberId()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData1 = new LinkedHashMap<>(); + respData1.put(tp0, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + respData1.put(tp1, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + + ShareFetchResponse resp1 = context1.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData1); + assertEquals(Errors.NONE, resp1.error()); + + assertEquals(new HashSet<>(Arrays.asList(tp0, tp1)), + new HashSet<>(sharePartitionManager.cachedTopicIdPartitionsInShareSession(groupId, memberId1))); + + // Create a new share session with an initial share fetch request. + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData2 = Collections.singletonMap( + tp2, new ShareFetchRequest.SharePartitionData(tp2.topicId(), 100)); + + ShareFetchMetadata reqMetadata2 = new ShareFetchMetadata(memberId2, ShareFetchMetadata.INITIAL_EPOCH); + ShareFetchContext context2 = sharePartitionManager.newContext(groupId, reqData2, EMPTY_PART_LIST, reqMetadata2); + assertEquals(context2.getClass(), ShareSessionContext.class); + assertFalse(((ShareSessionContext) context2).isSubsequent()); + + ShareSessionKey shareSessionKey2 = new ShareSessionKey(groupId, + reqMetadata2.memberId()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData2 = new LinkedHashMap<>(); + respData2.put(tp2, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + + ShareFetchResponse resp2 = context2.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData2); + assertEquals(Errors.NONE, resp2.error()); + + assertEquals(Collections.singletonList(tp2), sharePartitionManager.cachedTopicIdPartitionsInShareSession(groupId, memberId2)); + + // Continue the first share session we created. + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData3 = Collections.singletonMap( + tp2, new ShareFetchRequest.SharePartitionData(tp2.topicId(), 100)); + ShareFetchContext context3 = sharePartitionManager.newContext(groupId, reqData3, EMPTY_PART_LIST, + new ShareFetchMetadata(shareSessionKey1.memberId(), 1)); + assertEquals(context3.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context3).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData3 = new LinkedHashMap<>(); + respData3.put(tp2, new ShareFetchResponseData.PartitionData().setPartitionIndex(0)); + ShareFetchResponse resp3 = context3.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData3); + assertEquals(Errors.NONE, resp3.error()); + + assertEquals(new HashSet<>(Arrays.asList(tp0, tp1, tp2)), + new HashSet<>(sharePartitionManager.cachedTopicIdPartitionsInShareSession(groupId, memberId1))); + + // Continue the second session we created. + Map<TopicIdPartition, ShareFetchRequest.SharePartitionData> reqData4 = Collections.singletonMap( + tp3, new ShareFetchRequest.SharePartitionData(tp3.topicId(), 100)); + ShareFetchContext context4 = sharePartitionManager.newContext(groupId, reqData4, Collections.singletonList(tp2), + new ShareFetchMetadata(shareSessionKey2.memberId(), 1)); + assertEquals(context4.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context4).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData4 = new LinkedHashMap<>(); + respData4.put(tp3, new ShareFetchResponseData.PartitionData().setPartitionIndex(1)); + ShareFetchResponse resp4 = context4.updateAndGenerateResponseData(groupId, reqMetadata2.memberId(), respData4); + assertEquals(Errors.NONE, resp4.error()); + + assertEquals(Collections.singletonList(tp3), sharePartitionManager.cachedTopicIdPartitionsInShareSession(groupId, memberId2)); + + // Close the first share session. + ShareFetchContext context5 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), EMPTY_PART_LIST, + new ShareFetchMetadata(reqMetadata1.memberId(), ShareFetchMetadata.FINAL_EPOCH)); + assertEquals(FinalContext.class, context5.getClass()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData5 = new LinkedHashMap<>(); + ShareFetchResponse resp5 = context5.updateAndGenerateResponseData(groupId, reqMetadata1.memberId(), respData5); + assertEquals(Errors.NONE, resp5.error()); + + assertThrows(ShareSessionNotFoundException.class, () -> sharePartitionManager.cachedTopicIdPartitionsInShareSession(groupId, memberId1)); + + // Continue the second share session . + ShareFetchContext context6 = sharePartitionManager.newContext(groupId, Collections.emptyMap(), Collections.singletonList(tp3), + new ShareFetchMetadata(shareSessionKey2.memberId(), 2)); + assertEquals(context6.getClass(), ShareSessionContext.class); + assertTrue(((ShareSessionContext) context6).isSubsequent()); + + LinkedHashMap<TopicIdPartition, ShareFetchResponseData.PartitionData> respData6 = new LinkedHashMap<>(); Review Comment: we cannot make this change since `updateAndGenerateResponseData` method expects a `LinkedHashMap` and not a `Map` -- This is an automated message from the Apache Git Service. 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