Validate HBase

Let us validate HBase installation by running few commands using HBase Shell.

• On the gateway node of the hbase cluster run hbase shell
• help command provides list of commands in different categories
• Namespace – group of tables (similar to schema or database)
  • create – create_namespace 'training'
  • list – list_namespace 'training'
  • list tables – list_namespace_tables 'training'
• Table – a group of rows which have keys and values
  • While creating the table we need to specify table name and at least one column family
  • Column family will have cells. A cell is nothing but, a name and value pair
  • e.g.: create 'training:hbasedemo', 'cf1'
  • list – list 'training:.*'
  • describe – describe 'training:hbasedemo'
  • truncate – truncate 'training:hbasedemo'
  • Dropping is 2 step process – disable and drop
  • disable – disable 'training:hbasedemo'
  • drop – drop 'training:hbasedemo'
• Inserting/updating data

https://gist.github.com/dgadiraju/c9c1cc520239a783ee581b32dd626113