HBase table scans
In the previous chapter, we took a look at CRUD operations in HBase. Now, let's take a step further and discuss table scans in Hbase. In Hbase, table scans are similar to iterators in Java or nonscrollable cursors in the RDBMS world. The HBase table scans command is useful for querying the data to access the complete set of records for a specific value by applying filters. Hence, the
scan() operation reads the defined portion of data similar to the
get() operation, and the filters are applied to the read portion for narrowing down the results further.
org.apache.hadoop.hbase.client package provides the
Scan class with the following constructors:
The default scan constructor reads the entire ...