Jobs Getting Stuck in Active State

Hi @behrad I am still experiencing jobs being stuck in the `active` state, similar to issue #391

I am using `kue@0.8.11` and redis `2.8.17`

I have tried to carefully setup all recommended steps to avoid this. Here are some code snippets. If I'm doing something wrong I would love to hear about it. I've just torn out the bits of source that deal with kue/jobs here and redacted stuff that wasn't relevant.

_producer_ -- separate node process

``` javascript
var jobs = kue.createQueue({ disableSearch: true, redis: config.redis });

var dying = false;
process.on('uncaughtException', function (err) {
log.error('uncaught exception', err.stack);
die();
dying = true;
});

process.on('SIGTERM', function () {
log.error('SIGTERM');
die();
dying = true;
});

function die() {
if (!dying) {
jobs.shutdown(function (err) {
if (err) { log.error('Kue DID NOT shutdown gracefully', err); }
else { log.info('Kue DID shutdown gracefully'); }
process.exit(1);
}
}

// createJob( ) is called on an interval as needed

function createJob(data) {
var job = jobs.create('deliver:sub', { title: 'Deliver Subscription', sub: data })
.removeOnComplete(true)
.attempts(5)
.backoff({type: 'exponential'})
.save(function (err) {
if (err) { return log.error('Error creating deliver:sub', err); }
log.info(util.format('job[%s] created', job.id));
});

job.on('complete', function() {
/* logic here */
});

job.on('failed', function () {
log.error(util.format('job[%s] failed ', job.id));
});
}
```

_consumer_ -- separate node process

``` javascript
var jobs = kue.createQueue({ disableSearch: true, redis: config.redis });

try {
kue.app.listen(3001);
} catch (err) {
log.error('Error: could not start kue express server', err);
}

// called in master b/c we use job retries
jobs.promote();

jobs.watchStuckJobs();

var dying = false;
process.on('uncaughtException', function (err) {
log.error('uncaught exception', err.stack);
die();
dying = true;
});

process.on('SIGTERM', function () {
log.error('SIGTERM');
die();
dying = true;
});

function die() {
if (!dying) {
jobs.shutdown(function (err) {
if (err) { log.error('Kue DID NOT shutdown gracefully ', err); }
else { log.info('Kue DID shutdown gracefully'); }
process.exit(1);
});
}
}

jobs.process('deliver:sub', 5, function (job, done) {
var domain = require('domain').create();

domain.on('error', function (err) {
log.error('domain error for deliver:sub', err);
done(err);
});

domain.run(function () {
process.nextTick(function () {
/* logic here that ends with either */
done();
/* OR */
done(err);
});
});
```

Start by reviewing the issue's use of jobs.process(), jobs.watchStuckJobs(), jobs.promote(), and jobs.shutdown() with Kue 0.8.11 and Redis 2.8.17, then compare the behavior with issue #391. Reproduce the active-state condition before narrowing down the relevant queue lifecycle path; done means identifying a reproducible cause and documenting a verified resolution or regression test.

Written by the indexing model from the issue text.