Vinod Kone created MESOS-9210:
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Summary: Mesos v1 scheduler library does not properly handle
SUBSCRIBE retries
Key: MESOS-9210
URL: https://issues.apache.org/jira/browse/MESOS-9210
Project: Mesos
Issue Type: Bug
Affects Versions: 1.6.1, 1.5.1, 1.7.0
Reporter: Vinod Kone
Assignee: Till Toenshoff
After the authentication related refactor done as part of
[https://reviews.apache.org/r/62594/,] the state of the scheduler is checked in
`send`
([https://github.com/apache/mesos/blob/master/src/scheduler/scheduler.cpp#L234)]
but it is changed in `_send`
([https://github.com/apache/mesos/blob/master/src/scheduler/scheduler.cpp#L234).]
As a result, we can have 2 SUBSCRIBE calls in flight at the same time on the
same connection! This is not good and not spec compliant of a HTTP client that
is expecting a streaming response.
We need to fix the library to either drop the retried SUBSCRIBE call if one is
in progress (as it was before the refactor) or close the old connection and
start a new connection to send the retried SUBSCRIBE call.
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