How to see the input and output in storm [closed]

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Closed 5 years ago.

I have installed Apache Storm and also executed the example word count topology. But there was no input or output shown. How can I see it?

回答1:

Basic Understanding

• The manual is a must-read, especially the Concepts section will help you to get a basic understanding.
• You should not only install the example topology for word count, you should also read the appendant tutorial.

Input / Output

• Your last bolt should transport the output to the destination. That might be a database, service, ...
• You may use logging as in any other Java application.
• If you're using the Trident API, there is a Debug filter, which you can integrate into your topology.

来源：https://stackoverflow.com/questions/20877656/how-to-see-the-input-and-output-in-storm