 When Table size threaten to grow beyond a specified limit, the tablets may be compressed using the algorithm BMDiff and the Zippy compression algorithm publicly known and open-sourced as Snappy, which is a less space-optimal variation of LZ77 but more efficient in terms of computing time.The locations in the GFS of tablets are recorded as database entries in multiple special tablets, which are called "META1" tablets.META1 tablets are found by querying the single "META0" tablet, which typically resides on a server of its own since it is often queried by clients as to the location of the "META1" tablet which itself has the answer to the question of where the actual data is located.