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Posted to commits@cassandra.apache.org by "Jon Haddad (Jira)" <ji...@apache.org> on 2020/02/19 00:57:00 UTC
[jira] [Created] (CASSANDRA-15589) Add histogram to prepared
statements and expose as virtual table
Jon Haddad created CASSANDRA-15589:
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Summary: Add histogram to prepared statements and expose as virtual table
Key: CASSANDRA-15589
URL: https://issues.apache.org/jira/browse/CASSANDRA-15589
Project: Cassandra
Issue Type: Improvement
Components: Observability/Metrics
Reporter: Jon Haddad
One of the biggest challenges as an operator is understanding what queries are being executed and how long they take. We have the ability to take short samples via profileload, but it’s lacking the full diagnostics that keeping histograms on each prepared statement could give us. Having this would be a massive benefit to most operators as they currently have no idea what Cassandra is actually doing.
Before committing let’s be sure to record some CPU flame graphs to ensure there isn’t noticeable performance overhead.
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