C0urante commented on a change in pull request #11323: URL: https://github.com/apache/kafka/pull/11323#discussion_r726485900
########## File path: connect/runtime/src/test/java/org/apache/kafka/connect/runtime/SubmittedRecordsTest.java ########## @@ -0,0 +1,213 @@ +/* + * 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.connect.runtime; + +import org.junit.Before; +import org.junit.Test; + +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import java.util.concurrent.atomic.AtomicInteger; + +import static org.apache.kafka.connect.runtime.SubmittedRecords.SubmittedRecord; +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertFalse; + +public class SubmittedRecordsTest { + + private static final Map<String, Object> PARTITION1 = Collections.singletonMap("subreddit", "apachekafka"); + private static final Map<String, Object> PARTITION2 = Collections.singletonMap("subreddit", "adifferentvalue"); + private static final Map<String, Object> PARTITION3 = Collections.singletonMap("subreddit", "asdfqweoicus"); + + private AtomicInteger offset; + + SubmittedRecords submittedRecords; + + @Before + public void setup() { + submittedRecords = new SubmittedRecords(); + offset = new AtomicInteger(); + } + + @Test + public void testNoRecords() { + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + assertEmptyRecords(); + } + + @Test + public void testNoCommittedRecords() { + for (int i = 0; i < 3; i++) { + for (Map<String, Object> partition : Arrays.asList(PARTITION1, PARTITION2, PARTITION3)) { + submittedRecords.submit(partition, newOffset()); + } + } + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + } + + @Test + public void testSingleAck() { + Map<String, Object> offset = newOffset(); + + SubmittedRecord submittedRecord = submittedRecords.submit(PARTITION1, offset); + // Record has been submitted but not yet acked; cannot commit offsets for it yet + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + submittedRecord.ack(); + // Record has been acked; can commit offsets for it + assertEquals(Collections.singletonMap(PARTITION1, offset), submittedRecords.committableOffsets()); + + // Everything has been ack'd and consumed; make sure that it's been cleaned up to avoid memory leaks + assertEmptyRecords(); + + // Old offsets should be wiped + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + } + + @Test + public void testMultipleAcksAcrossMultiplePartitions() { + Map<String, Object> partition1Offset1 = newOffset(); + Map<String, Object> partition1Offset2 = newOffset(); + Map<String, Object> partition2Offset1 = newOffset(); + Map<String, Object> partition2Offset2 = newOffset(); + + SubmittedRecord partition1Record1 = submittedRecords.submit(PARTITION1, partition1Offset1); + SubmittedRecord partition1Record2 = submittedRecords.submit(PARTITION1, partition1Offset2); + SubmittedRecord partition2Record1 = submittedRecords.submit(PARTITION2, partition2Offset1); + SubmittedRecord partition2Record2 = submittedRecords.submit(PARTITION2, partition2Offset2); + + // No records ack'd yet; can't commit any offsets + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + partition1Record2.ack(); + // One record has been ack'd, but a record that comes before it and corresponds to the same source partition hasn't been + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + partition2Record1.ack(); + // We can commit the first offset for the second partition + assertEquals(Collections.singletonMap(PARTITION2, partition2Offset1), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + // No new offsets to commit + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + partition1Record1.ack(); + partition2Record2.ack(); + // We can commit new offsets for both partitions now + Map<Map<String, Object>, Map<String, Object>> expectedOffsets = new HashMap<>(); + expectedOffsets.put(PARTITION1, partition1Offset2); + expectedOffsets.put(PARTITION2, partition2Offset2); + assertEquals(expectedOffsets, submittedRecords.committableOffsets()); + + // Everything has been ack'd and consumed; make sure that it's been cleaned up to avoid memory leaks + assertEmptyRecords(); + + // No new offsets to commit + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + } + + @Test + public void testRemoveLastSubmittedRecord() { + SubmittedRecord submittedRecord = submittedRecords.submit(PARTITION1, newOffset()); + submittedRecords.remove(submittedRecord); + + // Even if SubmittedRecords::remove is broken, we haven't ack'd anything yet, so there should be no committable offsets + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + submittedRecord.ack(); + // Even though the record has somehow been acknowledged, it should not be counted when collecting committable offsets + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + } + + @Test + public void testRemoveNotLastSubmittedRecord() { + Map<String, Object> partition1Offset = newOffset(); + Map<String, Object> partition2Offset = newOffset(); + + SubmittedRecord recordToRemove = submittedRecords.submit(PARTITION1, partition1Offset); + SubmittedRecord lastSubmittedRecord = submittedRecords.submit(PARTITION2, partition2Offset); + + assertNoEmptyDeques(); + + submittedRecords.remove(recordToRemove); + + assertNoEmptyDeques(); + // The only record for this partition has been removed; we shouldn't be tracking a deque for it anymore + assertRemovedDeques(PARTITION1); + + // Even if SubmittedRecords::remove is broken, we haven't ack'd anything yet, so there should be no committable offsets + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + recordToRemove.ack(); + // Even though the record has somehow been acknowledged, it should not be counted when collecting committable offsets + assertEquals(Collections.emptyMap(), submittedRecords.committableOffsets()); + + assertNoEmptyDeques(); + + lastSubmittedRecord.ack(); + // Now that the last-submitted record has been ack'd, we should be able to commit its offset + assertEquals(Collections.singletonMap(PARTITION2, partition2Offset), submittedRecords.committableOffsets()); + + // Everything has been ack'd and consumed; make sure that it's been cleaned up to avoid memory leaks + assertEmptyRecords(); Review comment: This is redundant; if `assertEmptyRecords()` passes, then there are no deques left in the `SubmittedRecords` instance to perform any assertions on. -- This is an automated message from the Apache Git Service. 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