zhijiangW commented on a change in pull request #8362: [FLINK-11391] Introduce shuffle master interface URL: https://github.com/apache/flink/pull/8362#discussion_r289249491
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/shuffle/PartitionDescriptor.java ########## @@ -0,0 +1,122 @@ +/* + * 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.shuffle; + +import org.apache.flink.runtime.executiongraph.ExecutionEdge; +import org.apache.flink.runtime.executiongraph.IntermediateResult; +import org.apache.flink.runtime.executiongraph.IntermediateResultPartition; +import org.apache.flink.runtime.io.network.partition.ResultPartitionType; +import org.apache.flink.runtime.jobgraph.IntermediateDataSetID; +import org.apache.flink.runtime.jobgraph.IntermediateResultPartitionID; + +import java.io.Serializable; +import java.util.List; + +import static org.apache.flink.util.Preconditions.checkArgument; + +/** + * Partition descriptor for {@link ShuffleMaster} to obtain {@link ShuffleDescriptor}. + */ +public class PartitionDescriptor implements Serializable { + + private static final long serialVersionUID = 6343547936086963705L; + + /** The ID of the result this partition belongs to. */ + private final IntermediateDataSetID resultId; + + /** The ID of the partition. */ + private final IntermediateResultPartitionID partitionId; + + /** The type of the partition. */ + private final ResultPartitionType partitionType; + + /** The number of subpartitions. */ + private final int numberOfSubpartitions; + + /** Connection index to identify this partition of intermediate result. */ + private final int connectionIndex; + + public PartitionDescriptor( + IntermediateDataSetID resultId, + IntermediateResultPartitionID partitionId, + ResultPartitionType partitionType, + int numberOfSubpartitions, + int connectionIndex) { + this.resultId = resultId; + this.partitionId = partitionId; + this.partitionType = partitionType; + checkArgument(numberOfSubpartitions >= 1); + this.numberOfSubpartitions = numberOfSubpartitions; + this.connectionIndex = connectionIndex; + } + + public IntermediateDataSetID getResultId() { + return resultId; + } + + public IntermediateResultPartitionID getPartitionId() { + return partitionId; + } + + public ResultPartitionType getPartitionType() { + return partitionType; + } + + public int getNumberOfSubpartitions() { + return numberOfSubpartitions; + } + + int getConnectionIndex() { + return connectionIndex; + } + + @Override + public String toString() { + return String.format( + "PartitionDescriptor [result id: %s, partition id: %s, partition type: %s, " + + "subpartitions: %d, connection index: %d]", + resultId, + partitionId, + partitionType, + numberOfSubpartitions, + connectionIndex); + } + + public static PartitionDescriptor from(IntermediateResultPartition partition) { + // The produced data is partitioned among a number of subpartitions. Review comment: checkNotNull(partition) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
