I count the disk usage. I found that from nodetool information, space used (live) is about the nodetool ring info.
space used(total) is about the disk usage.


On Thu, Dec 8, 2011 at 9:53 AM, 祝海通 <zhuhaitong@gmail.com> wrote:

We are testing the the performance of Cassandra for Big Data. Now I also have the problem. From nodetool cfstats, the space used (live) is 7 times than the Space used (total). Why?


On Wed, Dec 7, 2011 at 5:58 PM, Dotan N. <dipidi@gmail.com> wrote:
What kind of process did you use for loading 400GB of data?

Dotan, @jondot

On Wed, Dec 7, 2011 at 5:57 AM, 祝海通 <zhuhaitong@gmail.com> wrote:

We are using Cassandra 1.0.2. I am testing the TTL with loading 400G.  
When all the data are expired, I waited for some hours. 
Later, the nodetool ring is still have 90GB. So I made a major compaction. 
Then there are 30GB from the nodetool ring. After I saw the file system,I found there are zero sstable.
I don't know where comes the 30GB?

Best Regards