2010/12/6 魏金仙 sei_...@126.com:
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
2010/12/5 魏金仙 sei_...@126.com
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
