setOK thread still running even after stopping the worker

[telenskyt]

I stopped the worker (i.e. the redisWorker function) using the STOP button in Rgui. But the setOK thread is apparently still running in the background:

redisKeys("*")
[1] "jobs:2.alive.4"
redisTTL("jobs:2.alive.4")
[1] 4
redisTTL("jobs:2.alive.4")
[1] 3
redisTTL("jobs:2.alive.4")
[1] 2
redisTTL("jobs:2.alive.4")
[1] 5

Even starting a new worker (in the session where the previous worker was stopped) won't fix the situation:

redisWorker('jobs', redis_server)

Even this sequence (on the master) won't fix the situation:

removeQueue('jobs')
registerDoRedis('jobs', redis_server)

The only working "fix" is to close the whole R session (Rgui) that caused the problem.

This issue potentially might contribute (I say might as I am not sure at all) to unpredictable issues #14 and #15.

I use R 3.1.0, doRedis 1.1.1, rredis 1.6.9 and redis server 2.6.12, all on a single host Windows XP.