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https://issues.apache.org/jira/browse/MESOS-1865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
haosdent reassigned MESOS-1865:
-------------------------------
Assignee: haosdent
> Mesos APIs for non-leading masters should return copies of the leader's state
> or an error, not a success with incorrect information
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: MESOS-1865
> URL: https://issues.apache.org/jira/browse/MESOS-1865
> Project: Mesos
> Issue Type: Bug
> Components: json api
> Affects Versions: 0.20.1
> Reporter: Steven Schlansker
> Assignee: haosdent
>
> Some of the API endpoints, for example /master/tasks.json, will return bogus
> information if you query a non-leading master:
> {code}
> [steven@Anesthetize:~]% curl
> http://master1.mesos-vpcqa.otenv.com:5050/master/tasks.json | jq . | head -n
> 10
> {
> "tasks": []
> }
> [steven@Anesthetize:~]% curl
> http://master2.mesos-vpcqa.otenv.com:5050/master/tasks.json | jq . | head -n
> 10
> {
> "tasks": []
> }
> [steven@Anesthetize:~]% curl
> http://master3.mesos-vpcqa.otenv.com:5050/master/tasks.json | jq . | head -n
> 10
> {
> "tasks": [
> {
> "executor_id": "",
> "framework_id": "20140724-231003-419644938-5050-1707-0000",
> "id":
> "pp.guestcenterwebhealthmonitor.606cd6ee-4b50-11e4-825b-5212e05f35db",
> "name":
> "pp.guestcenterwebhealthmonitor.606cd6ee-4b50-11e4-825b-5212e05f35db",
> "resources": {
> "cpus": 0.25,
> "disk": 0,
> {code}
> This is very hard for end-users to work around. For example if I query
> "which master is leading" followed by "leader: which tasks are running" it is
> possible that the leader fails over in between, leaving me with an incorrect
> answer and no way to know that this happened.
> In my opinion the API should return the correct response (by asking the
> current leader?) or an error (500 Not the leader?) but it's unacceptable to
> return a successful wrong answer.
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