I've used the concept of tracing quite a bit in previous projects and I had
a couple questions:
* Can we use something like zipkin-htrace adapter for Phoenix traces? And
if I did would the calls be coming from the RS?
* How do you get the trace id on a query you create? Generally I've used
something where I can log back to a client a trace/span, and then go look
through the queries to match up why something took so long, etc. I could be
thinking about this wrong...
* Do you have to load the DDL manually, nothing seems to auto-create it, no
system table seems to be created outside of sequences and tables. I have
the default config files from Phoenix on the classpath. I also have the
compat and server jars on the CP. Below are the log lines I see in the
master and regionserver.
- I have set props.setProperty("phoenix.trace.frequency", "always") for
every query.
2014-08-27 01:55:27,483 INFO [main] trace.PhoenixMetricsSink: Writing
tracing metrics to phoenix table
2014-08-27 01:55:27,484 INFO [main] trace.PhoenixMetricsSink:
Instantiating writer class:
org.apache.phoenix.trace.PhoenixTableMetricsWriter
2014-08-27 01:55:27,490 INFO [main] trace.PhoenixTableMetricsWriter:
Phoenix tracing writer started
Thanks for the help,
-Dan
--
Dan Di Spaltro
