[FLINK-1486] Add a string to the print method to identify output

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Implemented
• Fix Version/s: 0.9
• Component/s: Runtime / Task
• Labels: usability
• Assignee: Maximilian Michels
• Reporter: Maximilian Michels
• Created: 06/Feb/15 11:55
• Updated: 15/Jul/18 07:42
• Resolved: 23/Apr/15 08:33

Description

The output of the print method of {[DataSet}} is mainly used for debug purposes. Currently, it is difficult to identify the output.

I would suggest to add another print(String str) method which allows the user to supply a String to identify the output. This could be a prefix before the actual output or a format string (which might be an overkill).

DataSet data = env.fromElements(1,2,3,4,5);

For example, data.print("MyDataSet: ") would output print

MyDataSet: 1
MyDataSet: 2
...

Issue Links

• relates to: FLINK-9850 Add a string to the print method to identify output for DataStream