4. Bigtable
●
The row keys are arbitrary strings (10-
100 bytes is typical)
●
Bigtable maintains data in lexicographic
order by row key.
●
The row range for a table is dynamically
partitioned. Each row range is called a
tablet.
●
Tablet is the unit of distribution and load
balancing.
5. Bigtable
●
Column keys are grouped into sets called
column families
●
Column families form the basic unit of
access control.
●
All data stored in a column family is
usually of the same type and compressed
together.
●
A column key is family:qualifier