创建表
create 'user_action_table', 'action_log', 'action'
-- 执行结果
=> Hbase::Table - m_table
描述表信息
desc 'm_table'
-- 执行结果
DESCRIPTION ENABLED
'm_table', {NAME => 'action', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => true 'false', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}, {NAME => 'meta_data', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER',COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}
增加列蔟
alter 'm_table', {NAME=>'cf_new', VERSIONS=>3, IN_MEMORY=>true}
-- 执行结果
Updating all regions with the new schema...
0/1 regions updated.
1/1 regions updated.
Done.
删除列蔟
alter 'm_table', {NAME=>'action', METHOD=>'delete'}
-- 执行结果
Updating all regions with the new schema...
0/1 regions updated.
1/1 regions updated.
Done.
删除表
disable 'm_table'
drop 'm_table'
写数据
put 'm_table', '1001', 'meta_data:name', 'zhang3'
put 'm_table', '1002', 'meta_data:name', 'li4'
put 'm_table', '1001', 'meta_data:age', '18'
put 'm_table', '1002', 'meta_data:gender', 'man'
读数据
-- 批量读
scan 'm_table'
-- 执行结果
ROW COLUMN+CELL
1001 column=meta_data:age, timestamp=1537187946181, value=18
1001 column=meta_data:name, timestamp=1537187946134, value=zhang3
1002 column=meta_data:gender, timestamp=1537187947640, value=man
1002 column=meta_data:name, timestamp=1537187946164, value=li4
-- 逐条读
get 'm_table', '1001'
get 'm_table', '1001', 'meta_data:name'
get 'm_table', '1002', {COLUMN=>'meta_data:gender', TIMESTAMP=>1536415926706}
查看行数
count 'm_table'
清空词表
truncate 'm_table'
