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From "B. Todd Burruss" <bburr...@real.com>
Subject cleaning house
Date Tue, 20 Apr 2010 17:33:46 GMT
i'm trying to draw some correlation between the size of my data and the 
space used on disk.  i have set <GCGraceSeconds>1</GCGraceSeconds> so 
there isn't any reason to keep data around.

my approach is this:

after only doing "puts" to cassandra for a while i stop my client and 
want to perform the proper "cleanup" and/or "compact" operations that 
will reduce the disk space used to a minimum.  however i can't seem to 
figure it out.  i've done "major compaction", "cleanup", etc. but 
doesn't seem to get the job done

so two questions

- what procedure is suggested to get rid of all unnecessary data?
- and what does the following "Compacted" file mean?  seams like it is 
marking "88" as compacted, but there are no more compactions happening 
according to compaction mgr

-rw-rw-r-- 1 bburruss bburruss          0 Apr 20 08:32 bucket-88-Compacted
-rw-rw-r-- 1 bburruss bburruss 1445218042 Apr 19 21:39 bucket-88-Data.db
-rw-rw-r-- 1 bburruss bburruss   12255925 Apr 19 21:39 bucket-88-Filter.db
-rw-rw-r-- 1 bburruss bburruss  451806386 Apr 19 21:39 bucket-88-Index.db


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