1.進入hbase shell console
$HBASE_HOME/bin/hbase shell
如果有kerberos認證,需要事先使用相應的keytab進行一下認證(使用kinit命令),認證成功之後再使hbase shell進入可以使用whoami命令可查看當前用。
2.查看所有表
hbase(main):001:0> list TABLE OS_ORDER2 qqq scores t1 table2 5 row(s) in 0.2270 seconds => ["OS_ORDER2", "qqq", "scores", "t1", "table2"]
3.創建表
#表名爲t1 ,family name爲 f1和f2 版本爲2 hbase(main):002:0> create 't1',{NAME => 'f1', VERSIONS => 2},{NAME => 'f2', VERSIONS => 2} 0 row(s) in 1.4210 seconds => Hbase::Table - t1
4.刪除表
分爲兩部:1)先disable
2)然後drop
hbase(main):004:0> disable 't1'
hbase(main):005:0> drop 't1'
5.查看錶結構
hbase(main):010:0> describe 't1' Table t1 is ENABLED t1 COLUMN FAMILIES DESCRIPTION {NAME => 'f1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS => '2', COMPRESSION => 'NONE', MIN_VERSIO NS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'} {NAME => 'f2', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS => '2', COMPRESSION => 'NONE', MIN_VERSIO NS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'} 2 row(s) in 0.0320 seconds
6.修改表結構
修改表結構需要先disable
hbase(main):002:0> disable 't1' 0 row(s) in 2.3620 seconds hbase(main):003:0> alter 't1',{NAME=>'body',TTL=>'15552000'},{NAME=>'meta', TTL=>'15552000'} Updating all regions with the new schema... 1/1 regions updated. Done. Updating all regions with the new schema... 1/1 regions updated. Done. 0 row(s) in 3.8080 seconds hbase(main):004:0> enable 't1' 0 row(s) in 1.2520 seconds
7.分配權限
# 語法 : grant <user> <permissions> <table> <column family> <column qualifier> 參數後面用逗號分隔 # 權限用五個字母表示: "RWXCA". # READ('R'), WRITE('W'), EXEC('X'), CREATE('C'), ADMIN('A') # 例如,給用戶‘tr'分配對錶t1有讀寫的權限, hbase(main)> grant 'trt','RW','t1'8.查看權限
# 語法:user_permission <table> # 例如,查看錶t1的權限列表 hbase(main)> user_permission 't1'
9.去掉權限
# 與分配權限類似,語法:revoke <user> <table> <column family> <column qualifier> # 例如,收回tr用戶在表t1上的權限 hbase(main)> revoke 'tr','t1'
10.添加數據
# 語法:put <table>,<rowkey>,<family:column>,<value>,<timestamp> # 例如:給表t1的添加一行記錄:rowkey是rowkey001,family name:f1,column name:col1,value:value01,timestamp:系統默認 hbase(main)> put 't1','rowkey001','f1:col1','value01'
11.查詢數據
1)查詢一行數據
# 語法:get <table>,<rowkey>,[<family:column>,....] # 例如:查詢表t1,rowkey001中的f1下的col1的值 hbase(main)> get 't1','rowkey001', 'f1:col1' # 或者: hbase(main)> get 't1','rowkey001', {COLUMN=>'f1:col1'} # 查詢表t1,rowke002中的f1下的所有列值 hbase(main)> get 't1','rowkey001'2)掃描表
# 語法:scan <table>, {COLUMNS => [ <family:column>,.... ], LIMIT => num} # 另外,還可以添加STARTROW、TIMERANGE和FITLER等高級功能 # 例如:掃描表t1的前5條數據 hbase(main)> scan 't1',{LIMIT=>5}3)查詢表中數據的行數
# 語法:count <table>, {INTERVAL => intervalNum, CACHE => cacheNum} # INTERVAL設置多少行顯示一次及對應的rowkey,默認1000;CACHE每次去取的緩存區大小,默認是10,調整該參數可提高查詢速度 # 例如,查詢表t1中的行數,每100條顯示一次,緩存區爲500 hbase(main)> count 't1', {INTERVAL => 100, CACHE => 500}12.刪除數據
1)刪除一行中某個列的值
# 語法:delete <table>, <rowkey>, <family:column> , <timestamp>,必須指定列名 # 例如:刪除表t1,rowkey001中的f1:col1的數據 hbase(main)> delete 't1','rowkey001','f1:col1'
2)刪除一行數據
# 語法:deleteall <table>, <rowkey>, <family:column> , <timestamp>,可以不指定列名,刪除整行數據 # 例如:刪除表t1,rowk001的數據 hbase(main)> deleteall 't1','rowkey001'
3)刪除表中所有的數據
# 語法: truncate <table> # 其具體過程是:disable table -> drop table -> create table # 例如:刪除表t1的所有數據 hbase(main)> truncate 't1'