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Getting Hadoop Job tracker Metrics in JSON

I am looking for a way to list all JobTracker and TaskTracker in JSON . When I try http://[myjobtrackermachine]:50030/metrics?format=json , I return an empty JSON string (although there are a lot of details in the user interface).

What am I missing?

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From some experience with json and java api, you might not have a json provider, you may need a library such as jackson or gson in the class path. These libraries can use reflection in pojo to convert them to json. Even if it is not a rest api, I am sure that it relies on some external json library. Hope this helps.

I found a couple of links that point to hadoop using the jailson api, so I assume this might be your problem. https://groups.google.com/a/cloudera.org/forum/?fromgroups=#!topic/cdh-user/PieR2X77X90

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Source: https://habr.com/ru/post/910326/

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