Dear Wiki user, You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.
The following page has been changed by stack: http://wiki.apache.org/hadoop/Hbase/Shell The comment on the change is: Updated the help output. ------------------------------------------------------------------------------ == Commands == {{{ + hbase(main):001:0> help + HBASE SHELL COMMANDS: alter Alter column family schema; pass table name and a dictionary specifying new column family schema. Dictionaries are described below in the GENERAL NOTES section. Dictionary must include name - of column family to alter. For example, to change the 'f1' column + of column family to alter. For example, - family in table 't1' from defaults to instead keep a maximum of 5 - cell VERSIONS, do: + + To change or add the 'f1' column family in table 't1' from defaults + to instead keep a maximum of 5 cell VERSIONS, do: + hbase> alter 't1', {NAME => 'f1', VERSIONS => 5} + + To delete the 'f1' column family in table 't1', do: + hbase> alter 't1', {NAME => 'f1', METHOD => 'delete'} - hbase> alter 't1', {NAME => 'f1', VERSIONS => 5} - - count Count the number of rows in a table. This operation may take a LONG + count Count the number of rows in a table. This operation may take a LONG time (Run '$HADOOP_HOME/bin/hadoop jar hbase.jar rowcount' to run a counting mapreduce job). Current count is shown every 1000 rows by default. Count interval may be optionally specified. Examples: - + hbase> count 't1' hbase> count 't1', 100000 @@ -45, +50 @@ hbase> create 't1', 'f1', 'f2', 'f3' hbase> create 't1', {NAME => 'f1', VERSIONS => 1, TTL => 2592000, \ BLOCKCACHE => true} + describe Describe the named table: e.g. "hbase> describe 't1'" delete Put a delete cell value at specified table/row/column and optionally @@ -72, +78 @@ hbase> get 't1', 'r1', {COLUMN => 'c1'} hbase> get 't1', 'r1', {COLUMN => ['c1', 'c2', 'c3']} hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1} - hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1, VERSIONS = 4} + hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1, \ + VERSIONS => 4} list List all tables in hbase
