Fix an issue for Mesos tasks without statuses

[arkan]

Hello there,

Thanks so much for this tool! I was willing to write something similar but you guys were faster ;-)

On my staging cluster I had some failed Mesos tasks without any statuses. It resulted in a crash.

So I came up with this patch that fixes the issues without (i hope) breaking other stuff.

Thanks!

[bobrik]

What Mesos version are you running? Can you show me the except from /master/state with empty statuses?

Thanks!

[arkan]

Sure! The cluster is based on Mesos 0.27.1. Regarding the output from /master/state here is a small excerpt on what I have on my side:

        ...
        {
          "id": "ct:1462291200000:0:task:",
          "name": "ChronosTask:task-id",
          "framework_id": "d155cdb7-671d-43e7-b203-05917e41e23e-0001",
          "executor_id": "",
          "slave_id": "d155cdb7-671d-43e7-b203-05917e41e23e-S4",
          "state": "TASK_FAILED",
          "resources": {
            "cpus": 0.1,
            "disk": 256,
            "mem": 1024
          },
          "statuses": [],
          "container": {
            "type": "DOCKER",
            "docker": {
              "image": "my-docker-image:latest",
              "network": "HOST",
              "privileged": false,
              "force_pull_image": true
            }
          }
        },
        ...

Thanks!

[bobrik]

👍

[arkan]

Thanks for the merge :metal: