.todo

App start/stop:
    ✔ find out when app is really started, it would be an exception if @done(2017-08-18 13:43) @project(App start/stop)
    'control' is applied to started but not yet running app (spooled state).
    ✔ what to do in case of WORKER count == 0? (not our business) @done(2017-08-18 13:43) @project(App start/stop)
    ✔ where to get app profile to start with? (sched deal) @done(2017-08-18 13:44) @project(App start/stop)
    ☐ Read initial apps profiles somewhere in sync(atomic) way (seems can't be done yet).

Tests:
    ✔ Remake test after massive refactoring. @done(2017-12-06 13:24) @project(Tests)
    ☐ tests for exceptions cases.

Metrics:
    ☐ timing metrics.
    ☐ web metricts, e.g. request count, may be rps someday.
    ✔ system metrics. LA done, Mem would be coslty, but maxrss was added. @done(2017-10-16 20:00) @project(Metrics)

Cluster:
    ✔ ways to identify cluster name/type, e.g. testing, production. Hint: YANDEX_ENVIRONMENT variable @done(2017-10-16 19:59) @project(Cluster)

Init:
    ☐ Shouldn't be in `run` state after install

State:
    ☐ Report failure reason.

SIX:
    ☐ six support.