Chinmay Soman created SAMZA-467:
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Summary: Add latency metrics to the different KeyValueStore layers
in Samza
Key: SAMZA-467
URL: https://issues.apache.org/jira/browse/SAMZA-467
Project: Samza
Issue Type: Improvement
Components: container
Affects Versions: 0.9.0
Reporter: Chinmay Soman
Currently we expose throughput related metrics in each of the key-value
processing layers : (CachedStore, SerialzedStore, RocksDbKeyValueStore, ...).
We should also add metrics like:
* avg[Get/Put]LatencyMs
* p95th[Get/Put]LatencyMs
* p99th[Get/Put]LatencyMs
These numbers are useful to correctly reason about the performance of a
stateful stream processor. This will also help in debugging the case of a
slowdown.
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