pvary commented on code in PR #6382: URL: https://github.com/apache/iceberg/pull/6382#discussion_r1043246601
########## flink/v1.16/flink/src/test/java/org/apache/iceberg/flink/sink/shuffle/TestShuffleOperator.java: ########## @@ -0,0 +1,132 @@ +/* + * 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.iceberg.flink.sink.shuffle; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertTrue; + +import java.util.Collections; +import org.apache.flink.api.common.ExecutionConfig; +import org.apache.flink.api.common.state.OperatorStateStore; +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.java.functions.KeySelector; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.fs.CloseableRegistry; +import org.apache.flink.runtime.execution.Environment; +import org.apache.flink.runtime.operators.coordination.MockOperatorEventGateway; +import org.apache.flink.runtime.operators.testutils.MockEnvironment; +import org.apache.flink.runtime.operators.testutils.MockEnvironmentBuilder; +import org.apache.flink.runtime.operators.testutils.MockInputSplitProvider; +import org.apache.flink.runtime.state.AbstractStateBackend; +import org.apache.flink.runtime.state.StateInitializationContext; +import org.apache.flink.runtime.state.StateInitializationContextImpl; +import org.apache.flink.runtime.state.TestTaskStateManager; +import org.apache.flink.runtime.state.hashmap.HashMapStateBackend; +import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; +import org.apache.flink.streaming.runtime.tasks.OneInputStreamTask; +import org.apache.flink.streaming.runtime.tasks.StreamMockEnvironment; +import org.apache.flink.streaming.util.MockOutput; +import org.apache.flink.streaming.util.MockStreamConfig; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.junit.After; +import org.junit.Before; +import org.junit.Test; + +public class TestShuffleOperator { + private ShuffleOperator<String, String> operator; + + private Environment getTestingEnvironment() { + return new StreamMockEnvironment( + new Configuration(), + new Configuration(), + new ExecutionConfig(), + 1L, + new MockInputSplitProvider(), + 1, + new TestTaskStateManager()); + } + + @Before + public void before() throws Exception { + MockOperatorEventGateway mockGateway = new MockOperatorEventGateway(); + KeySelector<String, String> keySelector = + new KeySelector<String, String>() { + private static final long serialVersionUID = 7662520075515707428L; + + @Override + public String getKey(String value) { + return value; + } + }; + + this.operator = + new ShuffleOperator<>(keySelector, TypeInformation.of(String.class), mockGateway); + Environment env = getTestingEnvironment(); + this.operator.setup( + new OneInputStreamTask<String, String>(env), + new MockStreamConfig(new Configuration(), 1), + new MockOutput<>(Lists.newArrayList())); + } + + @After + public void clean() throws Exception { + operator.close(); + } + + @Test + public void testInitializeState() throws Exception { + StateInitializationContext stateContext = getStateContext(); + operator.initializeState(stateContext); + + assertNotNull( + stateContext + .getOperatorStateStore() + .getListState(operator.generateGlobalDataDistributionWeightDescriptor())); + } + + @Test + public void testProcessElement() throws Exception { + StateInitializationContext stateContext = getStateContext(); + operator.initializeState(stateContext); + operator.processElement(new StreamRecord<>("a")); + operator.processElement(new StreamRecord<>("a")); + operator.processElement(new StreamRecord<>("b")); + assertTrue(operator.localDataStatisticsMap().containsKey("a")); + assertTrue(operator.localDataStatisticsMap().containsKey("b")); + assertEquals(2L, (long) operator.localDataStatisticsMap().get("a")); + assertEquals(1L, (long) operator.localDataStatisticsMap().get("b")); + } + + // ---------------- helper methods ------------------------- + + private StateInitializationContext getStateContext() throws Exception { + // Create the state context. + OperatorStateStore operatorStateStore = createOperatorStateStore(); + return new StateInitializationContextImpl(null, operatorStateStore, null, null, null); + } + + private OperatorStateStore createOperatorStateStore() throws Exception { + MockEnvironment env = new MockEnvironmentBuilder().build(); + AbstractStateBackend abstractStateBackend = new HashMapStateBackend(); + CloseableRegistry cancelStreamRegistry = new CloseableRegistry(); + return abstractStateBackend.createOperatorStateBackend( Review Comment: Maybe put some data here, and check that the state is restored as expected? -- This is an automated message from the Apache Git Service. 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