C. Scott Andreas updated CASSANDRA-7022:
    Component/s: Observability

> Consider an option to reduce tracing cost by writing only to sessions table 
> (not events)
> ----------------------------------------------------------------------------------------
>                 Key: CASSANDRA-7022
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7022
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability
>         Environment: C* 2.0.6 running on Ubuntu 12.04
>            Reporter: Bill Joyce
>            Priority: Minor
> With MySQL and SQL Server, I can profile all queries in high traffic 
> production environments. I'm assuming the bulk of the C* tracing cost comes 
> in writing to the system_traces.events table, so it would be great to have an 
> option to write just the system_traces.session info if that allows me to run 
> 'nodetool settraceprobability' with a higher probability (ideally a 
> probability of 1). This along with CASSANDRA-7021 would go a long way in 
> giving us performance analysis closer to what can be done with more mature 
> back ends.

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