Setting this option is equivalent to calling the setCacheBlocks method of the class org.apache.hadoop.hbase.client.Scan, in an HBase Java application. Helps to control the memory pressure on the HBase RegionServer, in conjunction with the HBASE_CACHING query option.

Type: Boolean; recognized values are 1 and 0, or true and false; any other value interpreted as false

Default: false (shown as 0 in output of SET statement)

Related information:

Using Impala to Query HBase Tables, HBASE_CACHING Query Option