Hi All,
I was diagnosing high CPU usage on my Cassandra 0.6.3.Then i came
across Cassandra wiki link which suggested following.
"
To lower compaction priority (thus reducing its impact on the rest of
the system, and making it take longer), add these options to
cassandra.in.sh in 0.6.3 or later:
-XX:+UseThreadPriorities \
-XX:ThreadPriorityPolicy=42 \
-Dcassandra.compaction.priority=1 \
"
http://wiki.apache.org/cassandra/PerformanceTuning
After adding above in my cassandra.in.sh my high CPU usage seems to
dropped very very low in fact it seem nothing is running on machine's.
So here is my question do i need to run nodetool compact or not and what
about noretool rapier.
--
S.Ali Ahsan
