[FLINK-36880][network] Hybrid shuffle supports job master failover if…

… only external tier used.

flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ResultPartitionBytes.java

@@ -19,7 +19,9 @@
 package org.apache.flink.runtime.executiongraph;
 
 import java.io.Serializable;
+import java.util.List;
 
+import static org.apache.flink.util.Preconditions.checkArgument;
 import static org.apache.flink.util.Preconditions.checkNotNull;
 
 /** This class represents a snapshot of the result partition bytes metrics. */
@@ -34,4 +36,23 @@ public ResultPartitionBytes(long[] subpartitionBytes) {
     public long[] getSubpartitionBytes() {
         return subpartitionBytes;
     }
+
+    /** Merge all {@link ResultPartitionBytes} by sum up them per-subpartition. */
+    public static ResultPartitionBytes mergeAll(List<ResultPartitionBytes> partitions) {
+        checkArgument(!partitions.isEmpty());
+        int expectedLength = partitions.get(0).getSubpartitionBytes().length;
+        for (ResultPartitionBytes resultPartitionByte : partitions) {
+            if (resultPartitionByte.getSubpartitionBytes().length != expectedLength) {
+                throw new IllegalArgumentException(
+                        "only all ResultPartitionBytes with the same length can be merged");
+            }
+        }
+        long[] mergedSubpartitionBytes = new long[expectedLength];
+        for (int i = 0; i < expectedLength; i++) {
+            for (ResultPartitionBytes resultPartitionByte : partitions) {
+                mergedSubpartitionBytes[i] += resultPartitionByte.getSubpartitionBytes()[i];
+            }
+        }
+        return new ResultPartitionBytes(mergedSubpartitionBytes);
+    }
 }

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/AllTieredShuffleMasterSnapshots.java

@@ -0,0 +1,50 @@
+/*
+ * 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.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
+
+import org.apache.flink.api.java.tuple.Tuple2;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * This is a collection of all {@link TieredShuffleMasterSnapshot}s from every tier in one snapshot
+ * round.
+ */
+public class AllTieredShuffleMasterSnapshots implements Serializable {
+    /**
+     * Snapshots of all tires. For each tier, it is a tuple of
+     * (identifier,TieredShuffleMasterSnapshot)
+     */
+    private final Collection<Tuple2<String, TieredShuffleMasterSnapshot>> snapshots;
+
+    public AllTieredShuffleMasterSnapshots(
+            Collection<Tuple2<String, TieredShuffleMasterSnapshot>> snapshots) {
+        this.snapshots = snapshots;
+    }
+
+    public Collection<Tuple2<String, TieredShuffleMasterSnapshot>> getSnapshots() {
+        return snapshots;
+    }
+
+    public static AllTieredShuffleMasterSnapshots empty() {
+        return new AllTieredShuffleMasterSnapshots(Collections.emptyList());
+    }
+}

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/EmptyTieredShuffleMasterSnapshot.java

@@ -0,0 +1,32 @@
+/*
+ * 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.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
+
+/**
+ * A singleton implementation of {@link TieredShuffleMasterSnapshot} that represents an empty
+ * snapshot of tiered shuffle master.
+ */
+public class EmptyTieredShuffleMasterSnapshot implements TieredShuffleMasterSnapshot {
+    private static final EmptyTieredShuffleMasterSnapshot INSTANCE =
+            new EmptyTieredShuffleMasterSnapshot();
+
+    public static EmptyTieredShuffleMasterSnapshot getInstance() {
+        return INSTANCE;
+    }
+}

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/ShuffleDescriptorRetriever.java

@@ -0,0 +1,36 @@
+/*
+ * 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.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
+
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
+import org.apache.flink.runtime.shuffle.ShuffleDescriptor;
+
+import java.util.Optional;
+
+/** The retriever for shuffle descriptor. */
+public interface ShuffleDescriptorRetriever {
+    /**
+     * Get shuffle descriptor by JobID and ResultPartitionId.
+     *
+     * @return shuffle descriptor or empty if not exist.
+     */
+    Optional<ShuffleDescriptor> getShuffleDescriptor(
+            JobID jobID, ResultPartitionID resultPartitionID);
+}

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/TieredInternalShuffleMaster.java

@@ -19,7 +19,9 @@
 package org.apache.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
 
 import org.apache.flink.api.common.JobID;
+import org.apache.flink.api.java.tuple.Tuple2;
 import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.NettyShuffleEnvironmentOptions;
 import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
 import org.apache.flink.runtime.io.network.partition.hybrid.tiered.common.TieredStorageConfiguration;
 import org.apache.flink.runtime.io.network.partition.hybrid.tiered.common.TieredStorageIdMappingUtils;
@@ -30,11 +32,16 @@
 import org.apache.flink.runtime.io.network.partition.hybrid.tiered.tier.TierShuffleDescriptor;
 import org.apache.flink.runtime.io.network.partition.hybrid.tiered.tier.TierShuffleHandler;
 import org.apache.flink.runtime.shuffle.JobShuffleContext;
+import org.apache.flink.runtime.shuffle.PartitionWithMetrics;
 import org.apache.flink.runtime.shuffle.ShuffleDescriptor;
 import org.apache.flink.runtime.shuffle.ShuffleMasterContext;
+import org.apache.flink.runtime.shuffle.ShuffleMasterSnapshotContext;
 
+import java.time.Duration;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
+import java.util.Set;
 import java.util.concurrent.CompletableFuture;
 import java.util.stream.Collectors;
 
@@ -48,17 +55,75 @@ public class TieredInternalShuffleMaster {
 
     private final ShuffleMasterContext shuffleMasterContext;
 
-    public TieredInternalShuffleMaster(ShuffleMasterContext shuffleMasterContext) {
+    private final boolean useOnlyExternalTier;
+
+    public TieredInternalShuffleMaster(
+            ShuffleMasterContext shuffleMasterContext,
+            ShuffleDescriptorRetriever shuffleDescriptorRetriever) {
         this.shuffleMasterContext = shuffleMasterContext;
         Configuration conf = shuffleMasterContext.getConfiguration();
+        String externalTierFactoryClass =
+                conf.get(
+                        NettyShuffleEnvironmentOptions
+                                .NETWORK_HYBRID_SHUFFLE_EXTERNAL_REMOTE_TIER_FACTORY_CLASS_NAME);
+        this.useOnlyExternalTier = externalTierFactoryClass != null;
         TieredStorageConfiguration tieredStorageConfiguration =
                 TieredStorageConfiguration.fromConfiguration(conf);
         TieredStorageResourceRegistry resourceRegistry = new TieredStorageResourceRegistry();
-        List<TierMasterAgent> tierFactories =
+        List<Tuple2<String, TierMasterAgent>> tierFactories =
                 tieredStorageConfiguration.getTierFactories().stream()
-                        .map(tierFactory -> tierFactory.createMasterAgent(resourceRegistry))
+                        .map(
+                                tierFactory ->
+                                        Tuple2.of(
+                                                tierFactory.identifier(),
+                                                tierFactory.createMasterAgent(resourceRegistry)))
                         .collect(Collectors.toList());
-        this.tieredStorageMasterClient = new TieredStorageMasterClient(tierFactories);
+        this.tieredStorageMasterClient =
+                new TieredStorageMasterClient(tierFactories, shuffleDescriptorRetriever);
+    }
+
+    public boolean supportsBatchSnapshot() {
+        return useOnlyExternalTier;
+    }
+
+    public void snapshotState(
+            CompletableFuture<AllTieredShuffleMasterSnapshots> snapshotFuture,
+            ShuffleMasterSnapshotContext context,
+            JobID jobId) {
+        // only external tier supports snapshot for now.
+        if (useOnlyExternalTier) {
+            tieredStorageMasterClient.snapshotState(snapshotFuture, context, jobId);
+        }
+    }
+
+    public void snapshotState(CompletableFuture<AllTieredShuffleMasterSnapshots> snapshotFuture) {
+        if (useOnlyExternalTier) {
+            tieredStorageMasterClient.snapshotState(snapshotFuture);
+        }
+    }
+
+    public void restoreState(List<TieredInternalShuffleMasterSnapshot> snapshots, JobID jobId) {
+        if (useOnlyExternalTier) {
+            tieredStorageMasterClient.restoreState(snapshots, jobId);
+        }
+    }
+
+    public void restoreState(TieredInternalShuffleMasterSnapshot clusterSnapshot) {
+        if (useOnlyExternalTier) {
+            tieredStorageMasterClient.restoreState(clusterSnapshot);
+        }
+    }
+
+    public CompletableFuture<Collection<PartitionWithMetrics>> getPartitionWithMetrics(
+            JobShuffleContext jobShuffleContext,
+            Duration timeout,
+            Set<ResultPartitionID> expectedPartitions) {
+        if (useOnlyExternalTier) {
+            return tieredStorageMasterClient.getPartitionWithMetrics(
+                    jobShuffleContext, timeout, expectedPartitions);
+        } else {
+            return CompletableFuture.completedFuture(Collections.emptyList());
+        }
     }
 
     /**

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/TieredInternalShuffleMasterSnapshot.java

@@ -0,0 +1,55 @@
+/*
+ * 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.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
+
+import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
+import org.apache.flink.runtime.shuffle.ShuffleDescriptor;
+import org.apache.flink.runtime.shuffle.ShuffleMasterSnapshot;
+
+import java.util.Map;
+
+/**
+ * The internal {@link ShuffleMasterSnapshot} for hybrid shuffle. This bump shuffle descriptors and
+ * all tiers snapshot.
+ */
+public class TieredInternalShuffleMasterSnapshot implements ShuffleMasterSnapshot {
+    private final Map<ResultPartitionID, ShuffleDescriptor> shuffleDescriptors;
+
+    private final AllTieredShuffleMasterSnapshots allTierSnapshots;
+
+    public TieredInternalShuffleMasterSnapshot(
+            Map<ResultPartitionID, ShuffleDescriptor> shuffleDescriptors,
+            AllTieredShuffleMasterSnapshots allTierSnapshots) {
+        this.shuffleDescriptors = shuffleDescriptors;
+        this.allTierSnapshots = allTierSnapshots;
+    }
+
+    public Map<ResultPartitionID, ShuffleDescriptor> getShuffleDescriptors() {
+        return shuffleDescriptors;
+    }
+
+    public AllTieredShuffleMasterSnapshots getAllTierSnapshots() {
+        return allTierSnapshots;
+    }
+
+    @Override
+    public boolean isIncremental() {
+        return true;
+    }
+}

flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/hybrid/tiered/shuffle/TieredShuffleMasterSnapshot.java

@@ -0,0 +1,29 @@
+/*
+ * 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.flink.runtime.io.network.partition.hybrid.tiered.shuffle;
+
+import java.io.Serializable;
+
+/**
+ * This class represents a snapshot of tiered shuffle master, which can be used to restore the
+ * internal state of the shuffle master.
+ *
+ * <p>IMPORTANT: It is incremental.
+ */
+public interface TieredShuffleMasterSnapshot extends Serializable {}