YARN REST API returns startedTime and other fields as 0

Question

When making calls to the YARN REST Api via curl, to get the jobs on the cluster, using:

curl --negotiate -u : http:<rm url>:<port>/ws/v1/cluster/apps?states=finished,failed,killed

In the resulting JSON, I get all the values but startedTime, finishedTime and elapsedTime have value 0.

N.B: On the YARN UI, these values are present, and also when using the cmd yarn application -status.

I checked on the API documentation, and I couldn't find a parameter to force the fields returned, is it because of some parameter that I can't get these values?

Answer 1

I'd answer my question in case someone has the same issue.

After more research, I found that the access to some metrics via the YARN REST API in a Kerberized cluster is restricted via ACLs, only the user who lunched the job and the admin users are able to access these metrics.

To bypass this, we ought to:

yarn.admin.acl=false

or

yarn.scheduler.capacity.root.acl_administer_jobs=*
yarn.scheduler.capacity.root.acl_administer_queue=*

Source: https://community.hortonworks.com/questions/91199/yarn-web-interface-reporting-0-for-many-metrics-fo.html