Clustering info is stored in the index of an SSTable, so if you are only
querying a subset of rows within the partition you don't necessarily have
to hit all SSTables, just the SSTables that contain the relevant clustering
col's. They make a big improvement, and can also be used quite effectively
i
Hi,
Clustering columns are used to order the data in a partition. However,
since data is split into SSTables, the rows are ordered by clustering key
only within each SSTable. Cassandra still needs to check all SSTables, and
merge the data if it is found in several SSTables. The only scanario where
