hbase操作命令
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hbase操作命令
增删表、增删域名空间、修改表的属性
进入hbase客户端：
[atguigu@hadoop1 hbase-1.3.1]$ hbase shell
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/module/hbase-1.3.1/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/slf4j-log4j12- 1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 1.3.1, r930b9a55528fe45d8edce7af42fef2d35e77677a, Thu Apr 6 19:36:54 PDT 2017
hbase(main):001:0>
查看域名空间：
hbase(main):004:0> list_namespace
NAMESPACE
default
hbase
2 row(s) in 0.6110 seconds
查看域名属性信息：
hbase(main):002:0> describe_namespace 'hbase'
DESCRIPTION
NAME => 'hbase'
1 row(s) in 0.3100 seconds
查看域名空间中的所有表：
hbase(main):001:0> list_namespace_tables 'hbase'
TABLE
meta
namespace
2 row(s) in 0.3150 seconds
创建域名空间：
hbase(main):001:0> create_namespace 'ns1'
创建表：
hbase(main):001:0> create 'ns1:t1','cf1','cf2'
0 row(s) in 2.6770 seconds
=> Hbase::Table - ns1:t1
查看表：
hbase(main):002:0> describe 'ns1:t1'
Table ns1:t1 is ENABLED
ns1:t1
COLUMN FAMILIES DESCRIPTION
NAME => 'cf1', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', MIN_VE
RSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'
NAME => 'cf2', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', MIN_VE
RSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'
2 row(s) in 0.1680 seconds
查看表存不存在：
hbase(main):001:0> exists 'ns1:t1'
Table ns1:t1 does exist
0 row(s) in 0.5300 seconds
查看表是否启用状态（只有启用状态才能进行 写操作）：
hbase(main):001:0> is_enabled 'ns1:t1'
true
0 row(s) in 0.5660 seconds
同理：is_disabled 'ns1:t1'
停用表：
hbase(main):001:0> disable 'ns1:t1'
启用表：
hbase(main):001:0> enable 'ns1:t1'
统计表有多少行：
hbase(main):001:0> count 'ns1:t1'
清空表：
hbase(main):001:0> truncate 'ns1:t1'
查看表切分了几个Region:
hbase(main):001:0> get_spilts 'ns1:t1'
给表增加列族：
hbase(main):001:0> alter 'ns1:t1',NAME => 'f3'
更新表的列的属性：
hbase(main):001:0> alter 'ns1:t1',NAME => ‘f3’,VERSIONS => 3
删库（只有改库下的所有表都删除才能删库）：
hbase(main):001:0> drop_namespace 'ns1:f1'
删表（只有改表是disable状态才能删）：
hbase(main):001:0> drop 'ns1:f1'
查询、插入、删除数据
插入一条数据（向第一行，列族cf1，插入一个列为name,值为jack的格子）
hbase(main):001:0> put 't1','r1','cf1:name','jack'
查看某行的数据：
hbase(main):001:0> get ‘t1’,'r1'
获取多行的数据：
hbase(main):001:0> scan ‘t1’
删除某行的某个列族的一个列：
hbase(main):001:0> delete 't1','r1','cf1:age'
查看所有的数据（10个版本以内，包含已删除的数据)：
hbase(main):001:0> scan 't1',RAW=>true,VERSIONS=>10
插入一条数据（带时间戳）
hbase(main):001:0> put ‘t1’,'r1','cf1:age','10'，1609758553072
查询多条数据，scan高级用法：
hbase(main):001:0> scan 't1',COLUMNS=>['cf1:age'],LIMIT=>2,STARTROW=>'r2'
hbase(main):001:0> scan 't1',COLUMNS=>['cf1:age'],LIMIT=>2,STARTROW=>'r2'
ROW COLUMN+CELL
r2 column=cf1:age, timestamp=1610199211843, value=10
r3 column=cf1:age, timestamp=1610199217132, value=10
2 row(s) in 0.5510 seconds
hbase(main):001:0> scan 't1',COLUMNS=>['cf1:age'],STARTROW=>'r2',ENDROW=>'r5'
hbase(main):001:0> scan 't1',COLUMNS=>['cf1:age'],STARTROW=>'r2',ENDROW=>'r5'
ROW COLUMN+CELL
r2 column=cf1:age, timestamp=1610199211843, value=10
r3 column=cf1:age, timestamp=1610199217132, value=10
r4 column=cf1:age, timestamp=1610199221386, value=10
3 row(s) in 0.3860 seconds
查看hbase hfile文件信息：
[atguigu@hadoop1 root]$ hbase org.apache.hadoop.hbase.io.hfile.HFile -e -p -f hdfs://hadoop1:9000/HBase/data/default/t1/11e358e4d2913376c5c876e3cec500d6/cf1/aa1d5e75e5b64994ad02357bf1bdc2c0
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/module/hbase-1.3.1/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
2021-01-09 22:45:03,773 INFO [main] hfile.CacheConfig: Created cacheConfig: CacheConfig:disabled
K: r1/cf1:age/1610199195951/Put/vlen=2/seqid=10 V: 10
K: r2/cf1:age/1610199211843/Put/vlen=2/seqid=11 V: 10
K: r3/cf1:age/1610199217132/Put/vlen=2/seqid=12 V: 10
K: r4/cf1:age/1610199221386/Put/vlen=2/seqid=13 V: 10
K: r5/cf1:age/1610199225843/Put/vlen=2/seqid=14 V: 10
K: r6/cf1:age/1610199229831/Put/vlen=2/seqid=15 V: 10
Scanned kv count -> 6
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