[HUDI-2583] Refactor TestWriteCopyOnWrite test cases (#3832)

hudi-flink/src/main/java/org/apache/hudi/sink/partitioner/profile/WriteProfile.java

@@ -31,11 +31,9 @@ import org.apache.hudi.sink.partitioner.BucketAssigner;
 import org.apache.hudi.table.HoodieFlinkTable;
 import org.apache.hudi.table.HoodieTable;
 import org.apache.hudi.table.action.commit.SmallFile;
-import org.apache.hudi.util.StreamerUtil;
 
 import org.apache.flink.annotation.VisibleForTesting;
 import org.apache.flink.core.fs.Path;
-import org.apache.hadoop.conf.Configuration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -98,11 +96,6 @@ public class WriteProfile {
    */
   protected AbstractTableFileSystemView fsView;
 
-  /**
-   * Hadoop configuration.
-   */
-  private final Configuration hadoopConf;
-
   /**
    * Metadata cache to reduce IO of metadata files.
    */
@@ -114,7 +107,6 @@ public class WriteProfile {
     this.smallFilesMap = new HashMap<>();
     this.recordsPerBucket = config.getCopyOnWriteInsertSplitSize();
     this.table = HoodieFlinkTable.create(config, context);
-    this.hadoopConf = StreamerUtil.getHadoopConf();
     this.metadataCache = new HashMap<>();
     // profile the record statistics on construction
     recordProfile();

hudi-flink/src/test/java/org/apache/hudi/sink/TestWriteMergeOnRead.java

@@ -18,25 +18,11 @@
 
 package org.apache.hudi.sink;
 
-import org.apache.hudi.client.FlinkTaskContextSupplier;
-import org.apache.hudi.client.common.HoodieFlinkEngineContext;
-import org.apache.hudi.common.config.SerializableConfiguration;
-import org.apache.hudi.common.fs.FSUtils;
 import org.apache.hudi.common.model.HoodieTableType;
-import org.apache.hudi.common.table.HoodieTableMetaClient;
-import org.apache.hudi.common.table.TableSchemaResolver;
-import org.apache.hudi.config.HoodieWriteConfig;
 import org.apache.hudi.configuration.FlinkOptions;
-import org.apache.hudi.table.HoodieFlinkTable;
-import org.apache.hudi.util.StreamerUtil;
-import org.apache.hudi.utils.TestData;
 
-import org.apache.avro.Schema;
 import org.apache.flink.configuration.Configuration;
-import org.apache.hadoop.fs.FileSystem;
-import org.junit.jupiter.api.BeforeEach;
 
-import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -44,19 +30,6 @@ import java.util.Map;
  * Test cases for delta stream write.
  */
 public class TestWriteMergeOnRead extends TestWriteCopyOnWrite {
-  private FileSystem fs;
-  private HoodieWriteConfig writeConfig;
-  private HoodieFlinkEngineContext context;
-
-  @BeforeEach
-  public void before() throws Exception {
-    super.before();
-    fs = FSUtils.getFs(tempFile.getAbsolutePath(), new org.apache.hadoop.conf.Configuration());
-    writeConfig = StreamerUtil.getHoodieClientConfig(conf);
-    context = new HoodieFlinkEngineContext(
-        new SerializableConfiguration(StreamerUtil.getHadoopConf()),
-        new FlinkTaskContextSupplier(null));
-  }
 
   @Override
   protected void setUp(Configuration conf) {
@@ -68,14 +41,6 @@ public class TestWriteMergeOnRead extends TestWriteCopyOnWrite {
     // insert clustering is only valid for cow table.
   }
 
-  @Override
-  protected void checkWrittenData(File baseFile, Map<String, String> expected, int partitions) throws Exception {
-    HoodieTableMetaClient metaClient = HoodieFlinkTable.create(writeConfig, context).getMetaClient();
-    Schema schema = new TableSchemaResolver(metaClient).getTableAvroSchema();
-    String latestInstant = lastCompleteInstant();
-    TestData.checkWrittenDataMOR(fs, latestInstant, baseFile, expected, partitions, schema);
-  }
-
   @Override
   protected Map<String, String> getExpectedBeforeCheckpointComplete() {
     return EXPECTED1;

hudi-flink/src/test/java/org/apache/hudi/sink/TestWriteMergeOnReadWithCompact.java

@@ -20,7 +20,6 @@ package org.apache.hudi.sink;
 
 import org.apache.hudi.common.model.HoodieTableType;
 import org.apache.hudi.configuration.FlinkOptions;
-import org.apache.hudi.utils.TestUtils;
 
 import org.apache.flink.configuration.Configuration;
 
@@ -59,9 +58,4 @@ public class TestWriteMergeOnReadWithCompact extends TestWriteCopyOnWrite {
   protected HoodieTableType getTableType() {
     return HoodieTableType.MERGE_ON_READ;
   }
-
-  @Override
-  protected String lastCompleteInstant() {
-    return TestUtils.getLastDeltaCompleteInstant(tempFile.getAbsolutePath());
-  }
 }

hudi-flink/src/test/java/org/apache/hudi/sink/utils/InsertFunctionWrapper.java

@@ -47,7 +47,7 @@ import java.util.concurrent.CompletableFuture;
  *
  * @param <I> Input type
  */
-public class InsertFunctionWrapper<I> {
+public class InsertFunctionWrapper<I> implements TestFunctionWrapper<I> {
   private final Configuration conf;
   private final RowType rowType;
 
@@ -115,6 +115,11 @@ public class InsertFunctionWrapper<I> {
     return coordinator;
   }
 
+  @Override
+  public void close() throws Exception {
+    this.coordinator.close();
+  }
+
   public BulkInsertWriterHelper getWriterHelper() {
     return this.writeFunction.getWriterHelper();
   }

hudi-flink/src/test/java/org/apache/hudi/sink/utils/StreamWriteFunctionWrapper.java

@@ -66,7 +66,7 @@ import java.util.concurrent.CompletableFuture;
  *
  * @param <I> Input type
  */
-public class StreamWriteFunctionWrapper<I> {
+public class StreamWriteFunctionWrapper<I> implements TestFunctionWrapper<I> {
   private final Configuration conf;
 
   private final IOManager ioManager;

hudi-flink/src/test/java/org/apache/hudi/sink/utils/TestFunctionWrapper.java

@@ -0,0 +1,124 @@
+/*
+ * 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.sink.utils;
+
+import org.apache.hudi.common.model.HoodieKey;
+import org.apache.hudi.common.model.HoodieRecord;
+import org.apache.hudi.sink.StreamWriteOperatorCoordinator;
+import org.apache.hudi.sink.event.WriteMetadataEvent;
+
+import org.apache.flink.runtime.operators.coordination.MockOperatorCoordinatorContext;
+import org.apache.flink.runtime.operators.coordination.OperatorEvent;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Define the common interfaces for test function wrappers.
+ */
+public interface TestFunctionWrapper<I> {
+  /**
+   * Open all the functions within this wrapper.
+   */
+  void openFunction() throws Exception;
+
+  /**
+   * Process the given input record {@code record}.
+   */
+  void invoke(I record) throws Exception;
+
+  /**
+   * Returns the event buffer sent by the write tasks.
+   */
+  WriteMetadataEvent[] getEventBuffer();
+
+  /**
+   * Returns the next event.
+   */
+  OperatorEvent getNextEvent();
+
+  /**
+   * Snapshot all the functions in the wrapper.
+   */
+  void checkpointFunction(long checkpointId) throws Exception;
+
+  /**
+   * Mark checkpoint with id {code checkpointId} as success.
+   */
+  void checkpointComplete(long checkpointId);
+
+  /**
+   * Returns the operator coordinator.
+   */
+  StreamWriteOperatorCoordinator getCoordinator();
+
+  /**
+   * Returns the data buffer of the write task.
+   */
+  default Map<String, List<HoodieRecord>> getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Mark checkpoint with id {code checkpointId} as failed.
+   */
+  default void checkpointFails(long checkpointId) {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Returns the context of the coordinator.
+   */
+  default MockOperatorCoordinatorContext getCoordinatorContext() {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Mark sub-task with id {@code taskId} as failed.
+   */
+  default void subTaskFails(int taskId) throws Exception {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Returns whether the given key {@code key} is in the state store.
+   */
+  default boolean isKeyInState(HoodieKey key) {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Returns whether the bootstrap function already bootstrapped.
+   */
+  default boolean isAlreadyBootstrap() throws Exception {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Returns whether the write task is confirming.
+   */
+  default boolean isConforming() {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Close this function wrapper.
+   */
+  void close() throws Exception;
+}

hudi-flink/src/test/java/org/apache/hudi/sink/utils/TestWriteBase.java

@@ -0,0 +1,425 @@
+/*
+ * 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.sink.utils;
+
+import org.apache.hudi.client.WriteStatus;
+import org.apache.hudi.common.fs.FSUtils;
+import org.apache.hudi.common.model.HoodieKey;
+import org.apache.hudi.common.model.HoodieRecord;
+import org.apache.hudi.common.table.HoodieTableMetaClient;
+import org.apache.hudi.common.table.TableSchemaResolver;
+import org.apache.hudi.common.table.timeline.HoodieInstant;
+import org.apache.hudi.configuration.FlinkOptions;
+import org.apache.hudi.configuration.OptionsResolver;
+import org.apache.hudi.sink.event.WriteMetadataEvent;
+import org.apache.hudi.util.StreamerUtil;
+import org.apache.hudi.utils.TestData;
+import org.apache.hudi.utils.TestUtils;
+
+import org.apache.avro.Schema;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.operators.coordination.OperatorEvent;
+import org.apache.flink.table.data.RowData;
+import org.apache.hadoop.fs.FileSystem;
+import org.hamcrest.MatcherAssert;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * Base class for write test cases.
+ */
+public class TestWriteBase {
+  protected static final Map<String, String> EXPECTED1 = new HashMap<>();
+
+  protected static final Map<String, String> EXPECTED2 = new HashMap<>();
+
+  protected static final Map<String, String> EXPECTED3 = new HashMap<>();
+
+  protected static final Map<String, String> EXPECTED4 = new HashMap<>();
+
+  protected static final Map<String, List<String>> EXPECTED5 = new HashMap<>();
+
+  static {
+    EXPECTED1.put("par1", "[id1,par1,id1,Danny,23,1,par1, id2,par1,id2,Stephen,33,2,par1]");
+    EXPECTED1.put("par2", "[id3,par2,id3,Julian,53,3,par2, id4,par2,id4,Fabian,31,4,par2]");
+    EXPECTED1.put("par3", "[id5,par3,id5,Sophia,18,5,par3, id6,par3,id6,Emma,20,6,par3]");
+    EXPECTED1.put("par4", "[id7,par4,id7,Bob,44,7,par4, id8,par4,id8,Han,56,8,par4]");
+
+    EXPECTED2.put("par1", "[id1,par1,id1,Danny,24,1,par1, id2,par1,id2,Stephen,34,2,par1]");
+    EXPECTED2.put("par2", "[id3,par2,id3,Julian,54,3,par2, id4,par2,id4,Fabian,32,4,par2]");
+    EXPECTED2.put("par3", "[id5,par3,id5,Sophia,18,5,par3, id6,par3,id6,Emma,20,6,par3, "
+        + "id9,par3,id9,Jane,19,6,par3]");
+    EXPECTED2.put("par4", "[id10,par4,id10,Ella,38,7,par4, id11,par4,id11,Phoebe,52,8,par4, "
+        + "id7,par4,id7,Bob,44,7,par4, id8,par4,id8,Han,56,8,par4]");
+
+    EXPECTED3.put("par1", "[id1,par1,id1,Danny,23,1,par1]");
+
+    EXPECTED4.put("par1", "["
+        + "id1,par1,id1,Danny,23,0,par1, "
+        + "id1,par1,id1,Danny,23,1,par1, "
+        + "id1,par1,id1,Danny,23,2,par1, "
+        + "id1,par1,id1,Danny,23,3,par1, "
+        + "id1,par1,id1,Danny,23,4,par1]");
+
+    EXPECTED5.put("par1", Arrays.asList(
+        "id1,par1,id1,Danny,23,0,par1",
+        "id1,par1,id1,Danny,23,0,par1",
+        "id1,par1,id1,Danny,23,1,par1",
+        "id1,par1,id1,Danny,23,1,par1",
+        "id1,par1,id1,Danny,23,2,par1",
+        "id1,par1,id1,Danny,23,2,par1",
+        "id1,par1,id1,Danny,23,3,par1",
+        "id1,par1,id1,Danny,23,3,par1",
+        "id1,par1,id1,Danny,23,4,par1",
+        "id1,par1,id1,Danny,23,4,par1"));
+  }
+
+  // -------------------------------------------------------------------------
+  //  Inner Class
+  // -------------------------------------------------------------------------
+
+  /**
+   * Utils to composite the test stages.
+   */
+  public static class TestHarness {
+    public static TestHarness instance() {
+      return new TestHarness();
+    }
+
+    private File baseFile;
+    private String basePath;
+    private Configuration conf;
+    private TestFunctionWrapper<RowData> pipeline;
+
+    private String lastPending;
+    private String lastComplete;
+
+    public TestHarness preparePipeline(File basePath, Configuration conf) throws Exception {
+      preparePipeline(basePath, conf, false);
+      return this;
+    }
+
+    public TestHarness preparePipeline(File basePath, Configuration conf, boolean append) throws Exception {
+      this.baseFile = basePath;
+      this.basePath = this.baseFile.getAbsolutePath();
+      this.conf = conf;
+      this.pipeline = append
+          ? new InsertFunctionWrapper<>(this.basePath, conf)
+          : new StreamWriteFunctionWrapper<>(this.basePath, conf);
+      // open the function and ingest data
+      this.pipeline.openFunction();
+      return this;
+    }
+
+    public TestHarness consume(List<RowData> inputs) throws Exception {
+      for (RowData rowData : inputs) {
+        this.pipeline.invoke(rowData);
+      }
+      return this;
+    }
+
+    public TestHarness assertConsumeDoesNotThrow(List<RowData> inputs) {
+      assertDoesNotThrow(() -> {
+        consume(inputs);
+      }, "The stream writer reuse the last instant time when waiting for the last instant commit timeout");
+      return this;
+    }
+
+    /**
+     * Assert the event buffer is empty.
+     */
+    public TestHarness emptyEventBuffer() {
+      assertTrue(
+          this.pipeline.getEventBuffer().length == 1
+              && this.pipeline.getEventBuffer()[0] == null,
+          "The coordinator events buffer expect to be empty");
+      return this;
+    }
+
+    /**
+     * Assert the next event exists and handle over it to the coordinator.
+     */
+    public TestHarness assertNextEvent() {
+      final OperatorEvent nextEvent = this.pipeline.getNextEvent();
+      MatcherAssert.assertThat("The operator expect to send an event", nextEvent, instanceOf(WriteMetadataEvent.class));
+      this.pipeline.getCoordinator().handleEventFromOperator(0, nextEvent);
+      assertNotNull(this.pipeline.getEventBuffer()[0], "The coordinator missed the event");
+      return this;
+    }
+
+    /**
+     * Assert the next event exists and handle over it to the coordinator.
+     *
+     * @param numWriteStatus The expected write status num reported by the event
+     * @param partitions     The written partitions reported by the event
+     */
+    public TestHarness assertNextEvent(int numWriteStatus, String partitions) {
+      final OperatorEvent nextEvent = this.pipeline.getNextEvent();
+      MatcherAssert.assertThat("The operator expect to send an event", nextEvent, instanceOf(WriteMetadataEvent.class));
+      List<WriteStatus> writeStatuses = ((WriteMetadataEvent) nextEvent).getWriteStatuses();
+      assertNotNull(writeStatuses);
+      MatcherAssert.assertThat(writeStatuses.size(), is(numWriteStatus));
+      assertThat(writeStatuses.stream()
+              .map(WriteStatus::getPartitionPath).sorted(Comparator.naturalOrder())
+              .collect(Collectors.joining(",")),
+          is(partitions));
+      this.pipeline.getCoordinator().handleEventFromOperator(0, nextEvent);
+      assertNotNull(this.pipeline.getEventBuffer()[0], "The coordinator missed the event");
+      return this;
+    }
+
+    /**
+     * Assert the next event exists and handle over it to the coordinator.
+     *
+     * <p>Validates that the write metadata reported by the event is empty.
+     */
+    public TestHarness assertEmptyEvent() {
+      final OperatorEvent nextEvent = this.pipeline.getNextEvent();
+      MatcherAssert.assertThat("The operator expect to send an event", nextEvent, instanceOf(WriteMetadataEvent.class));
+      List<WriteStatus> writeStatuses = ((WriteMetadataEvent) nextEvent).getWriteStatuses();
+      assertNotNull(writeStatuses);
+      MatcherAssert.assertThat(writeStatuses.size(), is(0));
+      this.pipeline.getCoordinator().handleEventFromOperator(0, nextEvent);
+      assertNotNull(this.pipeline.getEventBuffer()[0], "The coordinator missed the event");
+      return this;
+    }
+
+    /**
+     * Assert the data buffer with given number of buckets and records.
+     */
+    public TestHarness assertDataBuffer(int numBuckets, int numRecords) {
+      Map<String, List<HoodieRecord>> dataBuffer = this.pipeline.getDataBuffer();
+      assertThat("Should have " + numBuckets + " data bucket", dataBuffer.size(), is(numBuckets));
+      assertThat(numRecords + " records expect to flush out as a mini-batch",
+          dataBuffer.values().stream().findFirst().map(List::size).orElse(-1),
+          is(numRecords));
+      return this;
+    }
+
+    /**
+     * Checkpoints the pipeline, which triggers the data write and event send.
+     */
+    public TestHarness checkpoint(long checkpointId) throws Exception {
+      this.pipeline.checkpointFunction(checkpointId);
+      return this;
+    }
+
+    public TestHarness allDataFlushed() {
+      Map<String, List<HoodieRecord>> dataBuffer = this.pipeline.getDataBuffer();
+      assertThat("All data should be flushed out", dataBuffer.size(), is(0));
+      return this;
+    }
+
+    /**
+     * Handle the next {@code numEvents} events and handle over them to the coordinator.
+     */
+    public TestHarness handleEvents(int numEvents) {
+      for (int i = 0; i < numEvents; i++) {
+        final OperatorEvent event = this.pipeline.getNextEvent(); // remove the first event first
+        assertThat("The operator expect to send an event", event, instanceOf(WriteMetadataEvent.class));
+        this.pipeline.getCoordinator().handleEventFromOperator(0, event);
+      }
+      assertNotNull(this.pipeline.getEventBuffer()[0], "The coordinator missed the event");
+      return this;
+    }
+
+    /**
+     * Mark the checkpoint with id {@code checkpointId} as finished.
+     */
+    public TestHarness checkpointComplete(long checkpointId) {
+      this.lastPending = lastPendingInstant();
+      this.pipeline.checkpointComplete(checkpointId);
+      // started a new instant already
+      checkInflightInstant();
+      checkInstantState(HoodieInstant.State.COMPLETED, lastPending);
+      this.lastComplete = lastPending;
+      this.lastPending = lastPendingInstant(); // refresh last pending instant
+      return this;
+    }
+
+    /**
+     * Mark the checkpoint finished with empty write metadata.
+     */
+    public TestHarness emptyCheckpoint(long checkpointId) {
+      String lastPending = lastPendingInstant();
+      this.pipeline.checkpointComplete(checkpointId);
+      // last pending instant was reused
+      assertEquals(this.lastPending, lastPending);
+      checkInstantState(HoodieInstant.State.COMPLETED, lastComplete);
+      return this;
+    }
+
+    /**
+     * Mark the checkpoint with id {@code checkpointId} as failed.
+     */
+    public TestHarness checkpointFails(long checkpointId) {
+      this.pipeline.checkpointFails(checkpointId);
+      assertFalse(this.pipeline.getCoordinatorContext().isJobFailed(),
+          "The last checkpoint was aborted, ignore the events");
+      // no complete instant
+      checkInstantState(HoodieInstant.State.COMPLETED, null);
+      return this;
+    }
+
+    public TestHarness checkpointNotThrow(long checkpointId, String message) {
+      // this returns early because there is no inflight instant
+      assertDoesNotThrow(() -> checkpoint(checkpointId), message);
+      return this;
+    }
+
+    /**
+     * Mark the task with id {@code taskId} as failed.
+     */
+    public TestHarness subTaskFails(int taskId) throws Exception {
+      // fails the subtask
+      String instant1 = lastPendingInstant();
+      this.pipeline.subTaskFails(taskId);
+
+      String instant2 = lastPendingInstant();
+      assertNotEquals(instant2, instant1, "The previous instant should be rolled back when starting new instant");
+      return this;
+    }
+
+    public TestHarness noCompleteInstant() {
+      // no complete instant
+      checkInstantState(HoodieInstant.State.COMPLETED, null);
+      return this;
+    }
+
+    /**
+     * Asserts the data files are empty.
+     */
+    public TestHarness assertEmptyDataFiles() {
+      File[] dataFiles = baseFile.listFiles(file -> !file.getName().startsWith("."));
+      assertNotNull(dataFiles);
+      assertThat(dataFiles.length, is(0));
+      return this;
+    }
+
+    public TestHarness checkWrittenData(Map<String, String> expected) throws Exception {
+      checkWrittenData(expected, 4);
+      return this;
+    }
+
+    public TestHarness checkWrittenData(
+        Map<String, String> expected,
+        int partitions) throws Exception {
+      if (OptionsResolver.isCowTable(conf) || conf.getBoolean(FlinkOptions.COMPACTION_ASYNC_ENABLED)) {
+        TestData.checkWrittenData(this.baseFile, expected, partitions);
+      } else {
+        checkWrittenDataMor(baseFile, expected, partitions);
+      }
+      return this;
+    }
+
+    private void checkWrittenDataMor(File baseFile, Map<String, String> expected, int partitions) throws Exception {
+      HoodieTableMetaClient metaClient = StreamerUtil.createMetaClient(basePath);
+      Schema schema = new TableSchemaResolver(metaClient).getTableAvroSchema();
+      String latestInstant = lastCompleteInstant();
+      FileSystem fs = FSUtils.getFs(basePath, new org.apache.hadoop.conf.Configuration());
+      TestData.checkWrittenDataMOR(fs, latestInstant, baseFile, expected, partitions, schema);
+    }
+
+    public TestHarness checkWrittenFullData(Map<String, List<String>> expected) throws IOException {
+      TestData.checkWrittenFullData(this.baseFile, expected);
+      return this;
+    }
+
+    public TestHarness checkWrittenAllData(Map<String, String> expected, int partitions) throws IOException {
+      TestData.checkWrittenAllData(baseFile, expected, partitions);
+      return this;
+    }
+
+    public TestHarness checkIndexLoaded(HoodieKey... keys) {
+      for (HoodieKey key : keys) {
+        assertTrue(this.pipeline.isKeyInState(key),
+            "Key: " + key + " assumes to be in the index state");
+      }
+      return this;
+    }
+
+    public TestHarness assertBootstrapped() throws Exception {
+      assertTrue(this.pipeline.isAlreadyBootstrap());
+      return this;
+    }
+
+    public TestHarness assertConfirming() {
+      assertTrue(this.pipeline.isConforming(),
+          "The write function should be waiting for the instant to commit");
+      return this;
+    }
+
+    public TestHarness assertNotConfirming() {
+      assertFalse(this.pipeline.isConforming(),
+          "The write function should finish waiting for the instant to commit");
+      return this;
+    }
+
+    public void end() throws Exception {
+      this.pipeline.close();
+    }
+
+    private String lastPendingInstant() {
+      return TestUtils.getLastPendingInstant(basePath);
+    }
+
+    private void checkInflightInstant() {
+      final String instant = TestUtils.getLastPendingInstant(basePath);
+      assertNotNull(instant);
+    }
+
+    private void checkInstantState(HoodieInstant.State state, String instantStr) {
+      final String instant;
+      switch (state) {
+        case REQUESTED:
+          instant = lastPendingInstant();
+          break;
+        case COMPLETED:
+          instant = lastCompleteInstant();
+          break;
+        default:
+          throw new AssertionError("Unexpected state");
+      }
+      assertThat(instant, is(instantStr));
+    }
+
+    protected String lastCompleteInstant() {
+      return OptionsResolver.isMorTable(conf)
+          ? TestUtils.getLastDeltaCompleteInstant(basePath)
+          : TestUtils.getLastCompleteInstant(basePath);
+    }
+  }
+}

hudi-flink/src/test/java/org/apache/hudi/utils/TestData.java

@@ -18,7 +18,6 @@
 
 package org.apache.hudi.utils;
 
-import org.apache.hudi.client.FlinkTaskContextSupplier;
 import org.apache.hudi.client.common.HoodieFlinkEngineContext;
 import org.apache.hudi.common.config.HoodieCommonConfig;
 import org.apache.hudi.common.fs.FSUtils;
@@ -543,17 +542,15 @@ public class TestData {
     // 1. init flink table
     HoodieTableMetaClient metaClient = HoodieTestUtils.init(basePath.getAbsolutePath());
     HoodieWriteConfig config = HoodieWriteConfig.newBuilder().withPath(basePath.getAbsolutePath()).build();
-    FlinkTaskContextSupplier supplier = new FlinkTaskContextSupplier(null);
-    HoodieFlinkEngineContext context = new HoodieFlinkEngineContext(supplier);
-    HoodieFlinkTable table = HoodieFlinkTable.create(config, context, metaClient);
+    HoodieFlinkTable table = HoodieFlinkTable.create(config, HoodieFlinkEngineContext.DEFAULT, metaClient);
 
     // 2. check each partition data
     expected.forEach((partition, partitionDataSet) -> {
 
       List<String> readBuffer = new ArrayList<>();
 
-      table.getFileSystemView().getAllFileGroups(partition)
-          .forEach(v -> v.getLatestDataFile().ifPresent(baseFile -> {
+      table.getBaseFileOnlyView().getLatestBaseFiles(partition)
+          .forEach(baseFile -> {
             String path = baseFile.getPath();
             try {
               ParquetReader<GenericRecord> reader = AvroParquetReader.<GenericRecord>builder(new Path(path)).build();
@@ -565,7 +562,7 @@ public class TestData {
             } catch (IOException e) {
               throw new RuntimeException(e);
             }
-          }));
+          });
 
       assertTrue(partitionDataSet.size() == readBuffer.size() && partitionDataSet.containsAll(readBuffer));