Philip Norman created MESOS-7918:
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Summary: The agent /containers endpoint does not return nested
containers
Key: MESOS-7918
URL: https://issues.apache.org/jira/browse/MESOS-7918
Project: Mesos
Issue Type: Bug
Components: HTTP API
Environment: DC/OS
Reporter: Philip Norman
h3. Background
This issue while debugging dcos-metrics. A DC/OS cluster running the HDFS
framework was missing application metrics. The HDFS tasks were emitting
metrics. The metrics process was aggregating them. But since no entry was
available for them in the /containers endpoint, they were not discoverable.
h3. What is wrong
h3. The agent in question was running two executors and two tasks - four
containers in total. /containers only showed two containers. It only showed the
executor containers, not their nested task containers.
Note the disparity between the output of /tasks and /containers in the attached
JSON.
h3. Suggested fix
The containers endpoint should display a flattened list of all the containers
running on the agent.
h3. To reproduce this issue
Start a framework which uses the default executor. Check the /containers output
of the agent on which it is running.
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