Database Reference
In-Depth Information
Apache HBase
HBase is the Hadoop database. HBase provides fast, random read-write access to a large
volume of data. HBase leverages the Hadoop cluster to store large tables that have millions
to billions of rows with millions of columns.
HBase is a column-oriented NoSQL data store and was designed based on Google's BigT-
able implementation. HBase is built on top of HDFS.
Tables in HBase are made of rows and columns. The intersection of a row and column is
called a
cell
. The cell in HBase is versioned by applying a timestamp (by default) of when
the data was inserted. The row acts as a key for the table, and any access operations on the
table are done using the row key.
The following diagram shows the workings of the HBase service:
