Misc Performance Questions

2011-06-08 Thread AJ
Is there a performance hit when dropping a CF? What if it contains .5 TB of data? If not, is there a quick and painless way to drop a large amount of data w/minimal perf hit? Is there a performance hit running multiple keyspaces on a cluster versus only one keyspace given a constant total

Re: Misc Performance Questions

2011-06-08 Thread Richard Low
Hi AJ, On Wed, Jun 8, 2011 at 9:29 AM, AJ a...@dude.podzone.net wrote: Is there a performance hit when dropping a CF?  What if it contains .5 TB of data?  If not, is there a quick and painless way to drop a large amount of data w/minimal perf hit? Dropping a CF is quick - it snapshots the

Re: Misc Performance Questions

2011-06-08 Thread AJ
Thank you Richard! On 6/8/2011 2:57 AM, Richard Low wrote: snip There is however a difference in running multiple column families versus putting everything in the same column family and separating them with e.g. a key prefix. E.g. if you have a large data set and a small one, it will be

Re: Misc Performance Questions

2011-06-08 Thread Richard Low
On Wed, Jun 8, 2011 at 12:30 PM, AJ a...@dude.podzone.net wrote: There is however a difference in running multiple column families versus putting everything in the same column family and separating them with e.g. a key prefix.  E.g. if you have a large data set and a small one, it will be