CODEWITHSUNDEEP
hadoop-yarnhadoop2
Sumit Nigam
Sumit Nigam

Reputation: 255

YARN REST API diagnostics field

The YARN Resource Manager REST APIs allow for getting details for the applications submitted. Through GET http:///ws/v1/cluster/apps one of the fields returned is "diagnostics". The description for it says - "Detailed diagnostic information".

However, I always see it being empty. Can this field be used to know the exact reason why an application may have exited? Like, did it get pre-empted by the RM or it failed on its own (crashed) or got killed by RM because it started exceeding its allowed quota, etc.?

Upvotes: 0

Views: 200

Answers (1)

Sumit Nigam
Sumit Nigam

Reputation: 255

To learn more, I've watched this field for various apps that I submitted on YARN - Hbase, SOLR, spark, etc. and in some cases this field is used to indicate final exit message for the process. So, this field is not necessarily always empty as I wrongly noted above.

Upvotes: 2

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