danny0405 commented on a change in pull request #2640: URL: https://github.com/apache/hudi/pull/2640#discussion_r589909956
########## File path: hudi-flink/src/test/java/org/apache/hudi/source/TestStreamReadMonitoringFunction.java ########## @@ -0,0 +1,278 @@ +/* + * 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.hudi.source; + +import org.apache.hudi.common.table.HoodieTableMetaClient; +import org.apache.hudi.operator.FlinkOptions; +import org.apache.hudi.operator.StreamReadMonitoringFunction; +import org.apache.hudi.operator.utils.TestConfigurations; +import org.apache.hudi.operator.utils.TestData; +import org.apache.hudi.source.format.mor.MergeOnReadInputSplit; +import org.apache.hudi.util.StreamerUtil; +import org.apache.hudi.utils.TestUtils; + +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.fs.Path; +import org.apache.flink.runtime.checkpoint.OperatorSubtaskState; +import org.apache.flink.streaming.api.functions.source.SourceFunction; +import org.apache.flink.streaming.api.operators.StreamSource; +import org.apache.flink.streaming.api.watermark.Watermark; +import org.apache.flink.streaming.util.AbstractStreamOperatorTestHarness; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.io.TempDir; + +import java.io.File; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; +import java.util.stream.Collectors; + +import static org.hamcrest.CoreMatchers.is; +import static org.hamcrest.MatcherAssert.assertThat; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * Test cases for {@link StreamReadMonitoringFunction}. + */ +public class TestStreamReadMonitoringFunction { + private static final long WAIT_TIME_MILLIS = 5 * 1000L; + + private Configuration conf; + + @TempDir + File tempFile; + + @BeforeEach + public void before() throws Exception { + final String basePath = tempFile.getAbsolutePath(); + conf = TestConfigurations.getDefaultConf(basePath); + conf.setString(FlinkOptions.TABLE_TYPE, FlinkOptions.TABLE_TYPE_MERGE_ON_READ); + conf.setInteger(FlinkOptions.STREAMING_CHECK_INTERVAL, 2); // check every 2 seconds + + StreamerUtil.initTableIfNotExists(conf); + } + + @Test + public void testConsumeFromLatestCommit() throws Exception { + TestData.writeData(TestData.DATA_SET_ONE, conf); + StreamReadMonitoringFunction function = getMonitorFunc(); + try (AbstractStreamOperatorTestHarness<MergeOnReadInputSplit> harness = createHarness(function)) { + harness.setup(); + harness.open(); + + CountDownLatch latch = new CountDownLatch(4); + TestSourceContext sourceContext = new TestSourceContext(latch); + + runAsync(sourceContext, function); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + assertThat("Should produce the expected splits", + sourceContext.getPartitionPaths(), is("par1,par2,par3,par4")); + assertTrue(sourceContext.splits.stream().noneMatch(split -> split.getInstantRange().isPresent()), + "No instants should have range limit"); + + Thread.sleep(1000L); + + // reset the source context + latch = new CountDownLatch(4); + sourceContext.reset(latch); + + // write another instant and validate + TestData.writeData(TestData.DATA_SET_TWO, conf); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + assertThat("Should produce the expected splits", + sourceContext.getPartitionPaths(), is("par1,par2,par3,par4")); + assertTrue(sourceContext.splits.stream().allMatch(split -> split.getInstantRange().isPresent()), + "All the instants should have range limit"); + + // Stop the stream task. + function.close(); + } + } + + @Test + public void testConsumeFromSpecifiedCommit() throws Exception { + // write 2 commits first, use the second commit time as the specified start instant, + // all the splits should come from the second commit. + TestData.writeData(TestData.DATA_SET_ONE, conf); + TestData.writeData(TestData.DATA_SET_TWO, conf); + String specifiedCommit = TestUtils.getLatestCommit(tempFile.getAbsolutePath()); + conf.setString(FlinkOptions.STREAMING_START_COMMIT, specifiedCommit); + StreamReadMonitoringFunction function = getMonitorFunc(); + try (AbstractStreamOperatorTestHarness<MergeOnReadInputSplit> harness = createHarness(function)) { + harness.setup(); + harness.open(); + + CountDownLatch latch = new CountDownLatch(4); + TestSourceContext sourceContext = new TestSourceContext(latch); + + runAsync(sourceContext, function); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + assertThat("Should produce the expected splits", + sourceContext.getPartitionPaths(), is("par1,par2,par3,par4")); + assertTrue(sourceContext.splits.stream().allMatch(split -> split.getInstantRange().isPresent()), + "All the instants should have range limit"); + assertTrue(sourceContext.splits.stream().allMatch(split -> split.getLatestCommit().equals(specifiedCommit)), + "All the splits should be with specified instant time"); + + // Stop the stream task. + function.close(); + } + } + + @Test + public void testCheckpointRestore() throws Exception { + TestData.writeData(TestData.DATA_SET_ONE, conf); + + StreamReadMonitoringFunction function = getMonitorFunc(); + OperatorSubtaskState state; + try (AbstractStreamOperatorTestHarness<MergeOnReadInputSplit> harness = createHarness(function)) { + harness.setup(); + harness.open(); + + CountDownLatch latch = new CountDownLatch(4); + TestSourceContext sourceContext = new TestSourceContext(latch); + runAsync(sourceContext, function); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + Thread.sleep(1000L); + + state = harness.snapshot(1, 1); + + // Stop the stream task. + function.close(); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + assertThat("Should produce the expected splits", + sourceContext.getPartitionPaths(), is("par1,par2,par3,par4")); + assertTrue(sourceContext.splits.stream().noneMatch(split -> split.getInstantRange().isPresent()), + "No instants should have range limit"); + + } + + TestData.writeData(TestData.DATA_SET_TWO, conf); + StreamReadMonitoringFunction function2 = getMonitorFunc(); + try (AbstractStreamOperatorTestHarness<MergeOnReadInputSplit> harness = createHarness(function2)) { + harness.setup(); + // Recover to process the remaining snapshots. + harness.initializeState(state); + harness.open(); + + CountDownLatch latch = new CountDownLatch(4); + TestSourceContext sourceContext = new TestSourceContext(latch); + runAsync(sourceContext, function2); + + // Stop the stream task. + function.close(); + + assertTrue(latch.await(WAIT_TIME_MILLIS, TimeUnit.MILLISECONDS), "Should finish splits generation"); + assertThat("Should produce the expected splits", + sourceContext.getPartitionPaths(), is("par1,par2,par3,par4")); + assertTrue(sourceContext.splits.stream().allMatch(split -> split.getInstantRange().isPresent()), + "All the instants should have range limit"); + } + } + + private StreamReadMonitoringFunction getMonitorFunc() { Review comment: Move to `TestUtils`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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