Hunter L created HELIX-735:
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Summary: Make AssignmentCalculators non-static so that tests pass
Key: HELIX-735
URL: https://issues.apache.org/jira/browse/HELIX-735
Project: Apache Helix
Issue Type: Improvement
Reporter: Hunter L
With the introduction of quota-based scheduling, every task that gets scheduled
takes up a thread. However, previously these AssignmentCalculators (both
generic and fixed for generic jobs and targeted jobs) were stateless so they
were instantiated statically. Since AssignmentCalculators now are stateful due
to them operating on AssignableInstances' quota profile, they were made
non-static so that they would be re-instantiated every pipeline.
This problem is specific to the testing environment where static variables live
on from test to test, causing AssignmentCalculators to hold on to the very
first reference to AssignableInstanceManager. Tasks were not being assigned and
scheduled because the first set of AssignableInstances would get filled up and
never get freed.
Changelist:
1. Make AssignmentCalculators non-static
2. Adjust sleep duration for some tests for stability
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