I was debugging a task and found that the task was stuck at a node without any errors or alerts .
There was nothing wrong in the process from where I was calling it.
There was clean up done for the environment recently, exactly two days ago.
Later on checking the logs, found this error :
10:24:50,053 INFO [stdout] (Appian WorkPoller - 2 [Notifications] (originally: default-threads - 5)) 2017-11-24 10:24:50,053 [Appian WorkPoller - 2 [Notifications] (originally: default-threads - 5)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller10:24:50,357 INFO [stdout] (Appian WorkPoller - 1 [ProcessExec01] (originally: default-threads - 4)) 2017-11-24 10:24:50,357 [Appian WorkPoller - 1 [ProcessExec01] (originally: default-threads - 4)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller10:24:50,455 INFO [stdout] (Appian WorkPoller - 4 [Collaboration] (originally: default-threads - 6)) 2017-11-24 10:24:50,455 [Appian WorkPoller - 4 [Collaboration] (originally: default-threads - 6)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller10:24:50,785 INFO [stdout] (Appian WorkPoller - 5 [ProcessDesign] (originally: default-threads - 7)) 2017-11-24 10:24:50,785 [Appian WorkPoller - 5 [ProcessDesign] (originally: default-threads - 7)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller10:24:51,134 INFO [stdout] (Appian WorkPoller - 3 [ProcessExec02] (originally: default-threads - 2)) 2017-11-24 10:24:51,134 [Appian WorkPoller - 3 [ProcessExec02] (originally: default-threads - 2)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller10:24:51,587 INFO [stdout] (Appian WorkPoller - 6 [ProcessExec00] (originally: default-threads - 8)) 2017-11-24 10:24:51,587 [Appian WorkPoller - 6 [ProcessExec00] (originally: default-threads - 8)] ERROR com.appiancorp.ra.workpoller.WorkPoller - Could not obtain 3 thread(s) after 4400000 attempts in work poller
Can somebody please guide how to resolve this issue.
This still persist even after a clean up.
Looks like its certainly a server issue.
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