Bill Farner created AURORA-122:
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Summary: Introduce a task store secondary index on slave host
Key: AURORA-122
URL: https://issues.apache.org/jira/browse/AURORA-122
Project: Aurora
Issue Type: Story
Components: Scheduler
Reporter: Bill Farner
Assignee: Bill Farner
We've observed the {{resourceOffers}} callback taking longer than desired in
large clusters. Timing has indicated that they take as long as 100ms
regularly, with occasional calls taking as long as a minute. We've narrowed
down the majority of time spent to be performing expensive task store queries
by slave host (in {{GcExecutorLauncher}}. When lots of hosts and tasks are
present, these calls should be considerably faster if we maintain a index on
slave host to avoid full task store scans.
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