hbase常用命令集
1.进入hbase
hbase shell
whoami
2. 创建表
语法：create <table>, {NAME => <family>, VERSIONS => <VERSIONS>}
创建一个User表，并且有一个info列族
hbase(main):002:0> create 'User','info' 0 row(s) in 1.5890 seconds => Hbase::Table - User
3、查看所有表
hbase(main):003:0> list
4. 查看表详情
hbase(main):004:0> describe 'User' Table User is ENABLED User COLUMN FAMILIES DESCRIPTION {NAME => 'info', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FORE VER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} 1 row(s) in 0.1410 seconds hbase(main):025:0> desc 'User' Table User is ENABLED User COLUMN FAMILIES DESCRIPTION {NAME => 'info', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FORE VER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} 1 row(s) in 0.0380 seconds
5. 表修改
删除指定的列族
hbase(main):002:0> alter 'User', 'delete' => 'info' Updating all regions with the new schema... 1/1 regions updated. Done. 0 row(s) in 2.5340 seconds
6. 插入数据
语法：put <table>,<rowkey>,<family:column>,<value>
每次只能插入一个列
hbase(main):005:0> put 'User', 'row1', 'info:name', 'xiaoming' 0 row(s) in 0.1200 seconds hbase(main):006:0> put 'User', 'row2', 'info:age', '18' 0 row(s) in 0.0170 seconds hbase(main):007:0> put 'User', 'row3', 'info:sex', 'man' 0 row(s) in 0.0030 seconds
7. 根据rowKey查询某个记录
语法：get <table>,<rowkey>,[<family:column>,....]
hbase(main):008:0> get 'User', 'row2' COLUMN CELL info:age timestamp=1502368069926, value=18 1 row(s) in 0.0280 seconds hbase(main):028:0> get 'User', 'row3', 'info:sex' COLUMN CELL info:sex timestamp=1502368093636, value=man hbase(main):036:0> get 'User', 'row1', {COLUMN => 'info:name'} COLUMN CELL info:name timestamp=1502368030841, value=xiaoming 1 row(s) in 0.0120 seconds
8. 查询所有记录
语法：scan <table>, {COLUMNS => [ <family:column>,.... ], LIMIT => num}
扫描所有记录
hbase(main):009:0> scan 'User' ROW COLUMN+CELL row1 column=info:name, timestamp=1502368030841, value=xiaoming row2 column=info:age, timestamp=1502368069926, value=18 row3 column=info:sex, timestamp=1502368093636, value=man 3 row(s) in 0.0380 seconds
扫描前2条
hbase(main):037:0> scan 'User', {LIMIT => 2} ROW COLUMN+CELL row1 column=info:name, timestamp=1502368030841, value=xiaoming row2 column=info:age, timestamp=1502368069926, value=18 2 row(s) in 0.0170 seconds
范围查询
hbase(main):011:0> scan 'User', {STARTROW => 'row2'} ROW COLUMN+CELL row2 column=info:age, timestamp=1502368069926, value=18 row3 column=info:sex, timestamp=1502368093636, value=man 2 row(s) in 0.0170 seconds hbase(main):012:0> scan 'User', {STARTROW => 'row2', ENDROW => 'row2'} ROW COLUMN+CELL row2 column=info:age, timestamp=1502368069926, value=18 1 row(s) in 0.0110 seconds hbase(main):013:0> scan 'User', {STARTROW => 'row2', ENDROW => 'row3'} ROW COLUMN+CELL row2 column=info:age, timestamp=1502368069926, value=18 1 row(s) in 0.0120 seconds
keyinfo模糊查询
scan 'User',{FILTER=>"PrefixFilter('ro')"}
根据列查询
scan 'User',{COLUMNS=>['info:age'],FILTER=>"(ValueFilter(=,'substring:10'))"}
9. 统计表记录数
语法：count <table>, {INTERVAL => intervalNum, CACHE => cacheNum}
INTERVAL设置多少行显示一次及对应的rowkey，默认1000；CACHE每次去取的缓存区大小，默认是10，调整该参数可提高查询速度
hbase(main):020:0> count 'User' 3 row(s) in 0.0360 seconds => 3
10. 删除
删除列
hbase(main):008:0> delete 'User', 'row1', 'info:age' 0 row(s) in 0.0290 seconds
删除所有行
hbase(main):014:0> deleteall 'User', 'row2' 0 row(s) in 0.0090 seconds
删除表中所有数据
hbase(main):016:0> truncate 'User' Truncating 'User' table (it may take a while): - Disabling table... - Truncating table... 0 row(s) in 3.6610 seconds
11. 禁用表
hbase(main):014:0> disable 'User' 0 row(s) in 2.2660 seconds hbase(main):015:0> describe 'User' Table User is DISABLED User COLUMN FAMILIES DESCRIPTION {NAME => 'info', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FORE VER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} 1 row(s) in 0.0340 seconds hbase(main):016:0> scan 'User', {STARTROW => 'row2', ENDROW => 'row3'} ROW COLUMN+CELL ERROR: User is disabled.
12. 启用表
hbase(main):017:0> enable 'User' 0 row(s) in 1.3470 seconds hbase(main):018:0> describe 'User' Table User is ENABLED User COLUMN FAMILIES DESCRIPTION {NAME => 'info', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FORE VER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} 1 row(s) in 0.0310 seconds hbase(main):019:0> scan 'User', {STARTROW => 'row2', ENDROW => 'row3'} ROW COLUMN+CELL row2 column=info:age, timestamp=1502368069926, value=18 1 row(s) in 0.0280 seconds
13. 测试表是否存在
hbase(main):022:0> exists 'User' Table User does exist 0 row(s) in 0.0150 seconds hbase(main):023:0> exists 'user' Table user does not exist 0 row(s) in 0.0110 seconds hbase(main):024:0> exists user NameError: undefined local variable or method `user' for #<Object:0x412ebe64>
4. 删除表
删除前，必须先disable
hbase(main):030:0> drop 'TEST.USER' ERROR: Table TEST.USER is enabled. Disable it first. Here is some help for this command: Drop the named table. Table must first be disabled: hbase> drop 't1' hbase> drop 'ns1:t1' hbase(main):031:0> disable 'TEST.USER' 0 row(s) in 2.2640 seconds hbase(main):033:0> drop 'TEST.USER' 0 row(s) in 1.2490 seconds hbase(main):034:0> list TABLE SYSTEM.CATALOG SYSTEM.FUNCTION SYSTEM.SEQUENCE SYSTEM.STATS User 5 row(s) in 0.0080 seconds => ["SYSTEM.CATALOG", "SYSTEM.FUNCTION", "SYSTEM.SEQUENCE", "SYSTEM.STATS", "User"]
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