Hadoop Essentials

Commands

To enter in HBase shell mode, use the following:

$ ${HBASE_HOME}/bin/hbase shell
.
.
HBase Shell; 
hbase>

You can use help to get a list of all commands.

help

hbase> help
HBASE SHELL COMMANDS:

Create

Used for creating a new table in HBase. For now we will stick to the simplest version which is as follows:

hbase> create 'test', 'cf'
0 row(s) in 1.2200 seconds

List

Use the list command to display the list of tables created, which is as follows:

hbase> list 'test'
TABLE
test
1 row(s) in 0.0350 seconds

=> ["test"]

Put

To put data into your table, use the put command:

hbase> put 'test', 'row1', 'cf:a', 'value1'
0 row(s) in 0.1770 seconds

hbase> put 'test', 'row2', 'cf:b', 'value2'
0 row(s) in 0.0160 seconds
hbase> put 'test', 'row3', 'cf:c', 'value3' ...