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as told in hbase introduction, hbase provides extensible jruby-based (jirb) shell as a feature to execute some commands(each command show cluster status. can be ‘summary’, ‘simple’, or ‘detailed’. the hbase> status ‘detailed’ version output this hbase versionusage: hbase> version whoami show the current hbase user.usage: alter column family schema; pas* table name and a dictionary specifying new column family schema. dictionaries are described on the main help command output. dictionary must include name of column family to alter.for example, to change or add the ‘f1’ column family in table ‘t1’ from current value to keep a maximum of 5 cell versions, do: to delete the ‘f1’ column family in table ‘t1’, use one of:hbase> alter ‘t1’, name => ‘f1’, method => ‘delete’ for example, to change the max size of a region to 128mb, do: you can add a table coprocessor by setting a table coprocessor attribute: since you can have multiple coprocessors configured for a table, a sequence number will be automatically appended to the attribute name the coprocessor attribute must match the pattern below in order for the framework to understand how to load the coprocessor clas*es: you can also set configuration settings specific to this table or column family:. hbase> alter ‘t1’, configuration => {‘hbase.hregion.scan.loadcolumnfamiliesondemand’ => ‘true’}. hbase> alter ‘t1’, {name => ‘f2’, configuration => {‘hbase.hstore.blockingstorefiles’ => ’10’}} owner => ‘johndoe’, metadata => { ‘mykey’ => ‘myvalue’ } create create table; pas* table name, a dictionary of column family, and optionally a dictionary of table configuration. hbase> create ‘t1’, {name => ‘f1’, versions => 5} hbase> create ‘t1’, {name => ‘f1’}, {name => ‘f2’}, {name hbase> # the above in shorthand would be the following: hbase> create ‘t1’, ‘f1’, ‘f2’, ‘f3’ hbase> create ‘t1’, {name => ‘f1’, versions => 1, ttl => 2592000, blockcache => true}