[REEF-1748] Aggregate counters in MetricesService

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Julia Wang
• Created: 10/Mar/17 04:34
• Updated: 10/Mar/17 04:34

Description

When Message Service receives counters as context message, it should aggregate counters with the following considerations:

• If evaluator contains the aggregated values, the value will override existing value
• If evaluator only keep delta, the value should be added at here. But the value in the evaluator should be reset after message is sent
• For the counters from multiple evaluators with the same counter name, the value should be aggregated here
• Failure cases.

Issue Links

• Is contained by: REEF-1732 Build Metrics System