I'd like to see how long my UDF/As take in the trace. Checked in 2.2rc1 and doesn't appear to be mentioned.
Thanks for pointing this out! Always had that in my mind but unfortunately completely missed to open a JIRA for this.
EDIT: should be a trivial patch - may make it into 2.2.0rc2.
Ready for review: https://github.com/chbatey/cassandra-1/tree/udf-trace
utests and dtests look fine (i.e. no regression)
Committed as e651fdd5f6bb5fee89dbfcb203a47c6a6dc79872 with a minor change to not use Guava's StopWatch in UDFunction.
Thanks for the patch!