Denis Chudov created IGNITE-25422:
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Summary: Add metrics for raft disruptors
Key: IGNITE-25422
URL: https://issues.apache.org/jira/browse/IGNITE-25422
Project: Ignite
Issue Type: Improvement
Reporter: Denis Chudov
*Motivation*
Currently there are jsut these metrics:
{code:java}
public DisruptorMetrics disruptorMetrics(String name) {
return new DisruptorMetrics(
(DistributionMetric) metrics.get(name + ".Batch"),
(DistributionMetric) metrics.get(name + ".Stripes")
);
} {code}
which means batch size and stripe hits.
We need to add the count of pending tasks (there is a separate queue (ring
buffer) for each stripe):
{code:java}
long cursor = rb.getCursor();
long minConsumer = rb.getMinimumGatingSequence();
long pending = cursor - minConsumer; {code}
This will allow us to make conclusions about the possible delays for task
processing.
Also, the time of processing might be useful.
*Definition of done*
Additional disruptor metrics are created:
- pending tasks (for each stripe, maximum, minimum, median)
- time of processing
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