On Monday, December 26, 2011, Asil Klin <asdk...@gmail.com> wrote: > If 3 rows in a column family need to be read together 'always', is it preferable to just merge them in 1 row using composite col names(instead of keeping in 3 rows) ? Does this improve read performance, anyway ?
You almost definitely want to merge this row. In spinning disk systems like SCSI or sata seeking data on disk is at a premium so having 3 independent seeks for data that is always read together is not good.