Dale LaBossiere created QUARKS-189:
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Summary: Undesirable metric op injection
Key: QUARKS-189
URL: https://issues.apache.org/jira/browse/QUARKS-189
Project: Quarks
Issue Type: Bug
Components: Runtime
Reporter: Dale LaBossiere
Priority: Minor
Manually added CounterOp or RateMeter oplets result in desirable additional
CounterOp (and StreamScope) injection in the DevelopmentProvider. e.g.
poll -> pipe(new CounterOp) /* Metrics.counter(stream) */ -> sink
results in
poll -> CounterOp -> StreamScope -> the-manual-CounterOp -> CounterOp ->
StreamScope -> sink
The injection code doesn't recognize that a counter op is already present -
i.e., it treats the manual CounterOp (or a manual RateMeter) as any other
oplet, resulting in injecting a CounterOp between it and the poll / sink.
As it turns out, the manual CounterOp/RateMeter is included in the "counter
metrics" retrieved by the Console and used for tuple-count info, so the
additional injections aren't really needed... and they look odd in the Console
because you see a sequence of 5 small rectangles... because the Console renders
all metric ops as small rectangles whether they're injected or not. Of course,
one of the StreamScope injections is needed.
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