[jira] [Created] (MESOS-8247) Executor registered message is lost

["Andrei Budnik (JIRA)" <ji...@apache.org>]

Andrei Budnik created MESOS-8247:
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             Summary: Executor registered message is lost
                 Key: MESOS-8247
                 URL: https://issues.apache.org/jira/browse/MESOS-8247
             Project: Mesos
          Issue Type: Bug
            Reporter: Andrei Budnik


h3. Brief description of successful agent-executor communication.
Executor sends `RegisterExecutorMessage` message to Agent during initialization step. Agent sends a `ExecutorRegisteredMessage` message as a response to the Executor in `registerExecutor()` method. Whenever executor receives `ExecutorRegisteredMessage`, it prints a `Executor registered on agent...` to stderr logs.

h3. Problem description.
The agent launches built-in docker executor, which is stuck in `STAGING` state.
stderr logs of the docker executor:
{code}
I1114 23:03:17.919090 14322 exec.cpp:162] Version: 1.2.3
{code}
It doesn't contain a message like `Executor registered on agent...`. At the same time agent received `RegisterExecutorMessage` and sent `runTask` message to the executor.

stdout logs consists of the same repeating message:
{code}
Received killTask for task ...
{code}
Also, the docker executor process doesn't contain child processes.

Currently, executor [doesn't attempt|https://github.com/apache/mesos/blob/2a253093ecdc7d743c9c0874d6e01b68f6a813e4/src/exec/exec.cpp#L320] to launch a task if it is not registered at the agent, while [task killing|https://github.com/apache/mesos/blob/2a253093ecdc7d743c9c0874d6e01b68f6a813e4/src/exec/exec.cpp#L343] doesn't have such a check.

It looks like `ExecutorRegisteredMessage` has been lost.



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