2010/12/6 魏金仙 :
> so when will index files be in the memory?
The index files are never fully in memory (because it would quickly be
too big).
Hence, only a sample of this file is in memory (1 every 128 entry by
default). When
cassandra needs to know where a (row) key is on disk (for a given
SStabl
2010/12/5 魏金仙
> for each sstable, there is an index file, which is loaded in memory to
> locate a particular key's offset efficiently.
>
Index files are not held in memory.
> and for each CF, KeysCached can be set to cache keys' location.
> could you pls tell me the difference between the two?
