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https://issues.apache.org/jira/browse/FLINK-2488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701218#comment-14701218
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ASF GitHub Bot commented on FLINK-2488:
---------------------------------------
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.
> Expose attemptNumber in RuntimeContext
> --------------------------------------
>
> Key: FLINK-2488
> URL: https://issues.apache.org/jira/browse/FLINK-2488
> Project: Flink
> Issue Type: Improvement
> Components: JobManager, TaskManager
> Affects Versions: 0.10
> Reporter: Robert Metzger
> Assignee: Sachin Goel
> Priority: Minor
>
> It would be nice to expose the attemptNumber of a task in the
> {{RuntimeContext}}.
> This would allow user code to behave differently in restart scenarios.
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