Su Ralph created EAGLE-683:
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Summary: AlertEngine : use capped collection for mongodb schedule
specs, keep last 1000
Key: EAGLE-683
URL: https://issues.apache.org/jira/browse/EAGLE-683
Project: Eagle
Issue Type: Improvement
Affects Versions: v0.5.0
Reporter: Su Ralph
Assignee: Zeng, Bryant
Fix For: v0.5.0
Currently, we enable periodically schedule in coordinator service itself. If
this is enabled, the schedule spec will finally used up metadata storage.
We should
1. Disable periodically schedule by default (storage like mysql doesn't have
capped feature)
2. For mongodb storage, use capped collection for schedule_specs,
policy_snapshots, streamSnapshots, groupSpecs, alertSpecs, monitoredStreams,
spoutSpecs (all schedule spec related collection).
Let use default config of 20,000 as capped collection size.
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