"Instance Unavailable"

[Marc Dugger]

Several tasks are failing to complete because of "Instance Unavailable". While I've seen this before, it has become a daily occurrence in the past week. 

Can anyone explain why this happens and how I can prevent it?

Thanks.

[George (Cloud Platform Support)]

Hello Marc, 

It is not so out-of-common for tasks in the task queue to fail for various reason. This happens, and there are detailed documentation how to deal with this situation and devise a strategy, namely on the "Retrying Failed Tasks" page. 

You can set retry parameters as detailed on that documentation page: 

<retry-parameters>
      <task-retry-limit>7</task-retry-limit>
      <task-age-limit>2d</task-age-limit>
    </retry-parameters>

[Marc Dugger]

George,

Thanks for the reply. I already have retry parameters set for that particular queue:

...and I'm unsure how adjusting the above parameters would help alleviate "Instance Unavailable".