On Mon, Jun 18, 2012 at 12:07 AM, Jason Tang wrote:
> After I enable key cache and row cache, the problem gone, I guess it because
> we have lots of data in SSTable, and it takes more time, memory and cpu to
> search the data.
The Key Cache is usually a win if added like this. The Row cache is
le
Hi
After I enable key cache and row cache, the problem gone, I guess it
because we have lots of data in SSTable, and it takes more time, memory and
cpu to search the data.
BRs
//Tang Weiqiang
2012/6/18 aaron morton
> It is also strange that although no data in Cassandra can fulfill the
> que
> It is also strange that although no data in Cassandra can fulfill the query
> conditions, but it takes more time if we have more data in Cassandra.
These log messages:
> DEBUG [ReadStage:89] 2012-06-17 20:17:26,958 SliceQueryFilter.java (line 123)
> collecting 0 of 5000:
> 7fff0
Hi
After I change log level to DEBUG, I found some log.
Although we don't have traffic to Cassandra, but we have scheduled the
task to perform the sliceQuery.
We use time-stamp as the index, we will perform the query by every second
to check if we have tasks to do.
After 24 hours, we h
Hi
After running load testing for 24 hours(insert, update and delete), now
no new traffic to Cassandra, but Cassnadra shows still have high load(CPU
usage), from the system.log, it shows it always perform GC. I don't know
why it work as that, seems memory is not low.
Here is some configuration
