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https://issues.apache.org/jira/browse/MESOS-6825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neil Conway updated MESOS-6825:
-------------------------------
Description:
The default {{allocation_interval}} is 1 second. This means that if the host
running the tests is slow, a test case might receive a resource offer that it
doesn't receive when running on a faster host. We could workaround this by
explicitly using {{WillRepeatedly(Return())}}, but that is a bit kludgy and
obscures the intent of the test.
One way to avoid this would be to pause the clock by default in tests
(MESOS-4101). That would be a quite involved change, however.
Instead, we could consider raising the default {{allocation_interval}} to a
large value, such as 1 minute or longer. This would significantly reduce the
chance of host performance causing test flakiness. Moreover, it would help to
highlight tests that rely on real-time batch allocations for correctness:
generally tests should avoid doing this (because it causes test slowness). They
should instead pause the clock and then advance it by {{allocation_interval}}.
was:
The default {{allocation_interval}} is 1 second. This means that if the host
running the tests is slow, a test case might receive a resource offer that it
doesn't receive when running on a faster host. We could workaround this by
explicitly using {{WillRepeatedly(Return())}, but that is a bit kludgy and
obscures the intent of the test.
One way to avoid this would be to pause the clock by default in tests
(MESOS-4101). That would be a quite involved change, however.
Instead, we could consider raising the default {{allocation_interval}} to a
large value, such as 1 minute or longer. This would significantly reduce the
chance of host performance causing test flakiness. Moreover, it would help to
highlight tests that rely on real-time batch allocations for correctness:
generally tests should avoid doing this (because it causes test slowness). They
should instead pause the clock and then advance it by {{allocation_interval}}.
> Increase default allocation_interval for tests
> ----------------------------------------------
>
> Key: MESOS-6825
> URL: https://issues.apache.org/jira/browse/MESOS-6825
> Project: Mesos
> Issue Type: Improvement
> Components: tests
> Reporter: Neil Conway
> Labels: mesosphere
>
> The default {{allocation_interval}} is 1 second. This means that if the host
> running the tests is slow, a test case might receive a resource offer that it
> doesn't receive when running on a faster host. We could workaround this by
> explicitly using {{WillRepeatedly(Return())}}, but that is a bit kludgy and
> obscures the intent of the test.
> One way to avoid this would be to pause the clock by default in tests
> (MESOS-4101). That would be a quite involved change, however.
> Instead, we could consider raising the default {{allocation_interval}} to a
> large value, such as 1 minute or longer. This would significantly reduce the
> chance of host performance causing test flakiness. Moreover, it would help to
> highlight tests that rely on real-time batch allocations for correctness:
> generally tests should avoid doing this (because it causes test slowness).
> They should instead pause the clock and then advance it by
> {{allocation_interval}}.
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