Total size includes SSTables that have been compacted, but have yet to be deleted from disk. Live space is only the space used by SSTables that are still in use.
You second set of numbers looks like minor compaction has done it's job and the unused space has been reclaimed. Hope that helps. Aaron On 9 Feb 2011, at 22:49, abhinav prakash rai wrote: > After 1 hour ,from the application was done, the size of data folder become > 14 GB and the result of cfstats is matching with this number (and Space used > (live) become equal to Space used (total) ). > > CF1- Space used (live) : 7196278850 > Space used (total): 7196278850 > CF2- Space used (live) : 2458866899 > Space used (total): 2458866899 > CF3- Space used (live) : 2871096369 > Space used (total) : 2967445550 > CF4- Space used (live) : 1536044466 > Space used (total) : 1536044466 > > After the application was done what kind operation was going on in Cassandra > and how much space it would require ? > > regards, > abhinav > > > > > > > On Wed, Feb 9, 2011 at 12:46 PM, abhinav prakash rai <abhinav....@gmail.com> > wrote: > I am using 4 column family in my application , the result of cfstats for > space taken by different CF are as below- > > CF1- Space used (live) : 7196159547 > Space used (total): 14214373706 > CF2- Space used (live) : 2456495851 > Space used (total): 9065746112 > > CF3- Space used (live) : 2864007861 > > Space used (total) : 6114084611 > > CF4- Space used (live) : 1531088094 > > Space used (total) : 3433016989 > > where as I can see the total size of data directory is 17GB which is not > equal to ALL Space used (total) by above 4 column families. If I assume Space > used (total) is in byte the sum is coming to about 32 GB which is not the > space taken by data_file_directories. > > Some one can help to know how much space is used by each CF's ? > > I am using replication_factor= 1. > > Regards, > abhinav > > > > > -- > Regards, > Abhinav P. Rai >
