Github user StephanEwen commented on a diff in the pull request: https://github.com/apache/flink/pull/1026#discussion_r37294536 --- Diff: flink-core/src/main/java/org/apache/flink/api/common/TaskRuntimeInfo.java --- @@ -0,0 +1,103 @@ +/* + * 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.api.common; + +/** + * Encapsulation of runtime information for a Task, including Task Name, sub-task index, etc. + * + */ +public class TaskRuntimeInfo implements java.io.Serializable { + + /** Task Name */ + private final String taskName; + + /** Index of this task in the parallel task group. Goes from 0 to {@link #numParallelTasks} - 1 */ + private final int subTaskIndex; + + /** Number of parallel running instances of this task */ + private final int numParallelTasks; + + /** Attempt number of this task */ + private final int attemptNumber; + + /** Task Name along with information on index of task in group */ + private transient final String taskNameWithSubTaskIndex; --- End diff -- If this is transient, it is null after deserialization. Either make it non-transient, or re-compute it after deserialization.
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