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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9850) Add a string to the print method to identify output for DataStream
Date Wed, 15 Aug 2018 11:40:01 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16580957#comment-16580957

ASF GitHub Bot commented on FLINK-9850:

pnowojski commented on a change in pull request #6367: [FLINK-9850] Add a string to the print
method to identify output for DataStream
URL: https://github.com/apache/flink/pull/6367#discussion_r210242096

 File path: flink-core/src/main/java/org/apache/flink/api/common/functions/util/TaskOutputWriter.java
 @@ -0,0 +1,81 @@
+ * 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.functions.util;
+import java.io.PrintStream;
+import java.io.Serializable;
+ * Task output writer for DataStream and DataSet print API.
+ */
+public class TaskOutputWriter<IN> implements Serializable {
 Review comment:
   add `@Internal`?

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> Add a string to the print method to identify output for DataStream
> ------------------------------------------------------------------
>                 Key: FLINK-9850
>                 URL: https://issues.apache.org/jira/browse/FLINK-9850
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataStream API
>            Reporter: Hequn Cheng
>            Assignee: vinoyang
>            Priority: Major
>              Labels: pull-request-available
> The output of the print method of {[DataSet}} allows the user to supply a String to identify
the output(see [FLINK-1486|https://issues.apache.org/jira/browse/FLINK-1486]). But {[DataStream}}
doesn't support now. It is valuable to add this feature for {{DataStream}}

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