电脑太卡了,使用不了hadoop和hdfs了,所以今天安装了一个伪分布式,数据存储在本地磁盘,也没有向HDFS中存,也没有使用自己的zookeeper,安装过程中还出了点小问题,总结一下,免得忘了。
1.hbase的安装
·将压缩包上传到linux中,解压,上传我使用的是secureCRT,直接ALT+P,然后从windows中下好的,拖进去就可以了。
·解压命令:tar -zxvf hbase.tar.gz
·修改配置文件,将目录切换到hbase/conf,修改第一个配置文件hbse-env.sh:这个文件修改两个位置,第一个是加入jdk,第二个是将zookeeper设置true【使用自带的,当然是可以使用自己的】
export JAVA_HOME=/home/kwhadoop/hadoop/jdk export HBASE_MANAGES_ZK=true
·修改hbse-site.xml文件,将目录改到本地
<configuration> <property> <name>hbase.rootdir</name> <value>file:///home/kwhadoop/te</value> </property> </configuration>
·启动命令
[root@hadoop bin]#./start-hbase.sh
`启动shell
[root@hadoop bin]# ./hbase shell
2018-03-30 18:40:12,322 INFO [main] Configuration.deprecation: hadoop.native.lib is deprecated. Instead, use io.native.lib.ava ilable
HBase Shell; enter ‘help<RETURN>’ for list of supported commands.
Type “exit<RETURN>” to leave the HBase Shell
Version 0.96.2-hadoop2, r1581096, Mon Mar 24 16:03:18 PDT 2014
hbase(main):001:0>
(1)创建表
hbase(main):001:0> create 'user1','info1' 0 row(s) in 47.2280 seconds => Hbase::Table - user1
(2)显示表
hbase(main):004:0> list TABLE user1 1 row(s) in 0.0960 seconds => ["user1"]
(3)显示表结构
hbase(main):007:0> describe 'user1' DESCRIPTION ENABLED 'user1', {NAME => 'info1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0' true , VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => '2147483647', KEEP_DELETED_CELLS = > 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'} 1 row(s) in 0.2010 seconds
(4)删除表的时候先要将表设置为disable,否则无法删除
hbase(main):008:0> drop 'user1' ERROR: Table user1 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'
(5)将表设置为disable
hbase(main):008:0> disable 'user1'
(6)添加字段
hbase(main):002:0> put 'user1','1232456','info1:name','kw' 0 row(s) in 0.2550 seconds
(7)全表扫描
hbase(main):003:0> scan 'user1' ROW COLUMN+CELL 1232456 column=info1:name, timestamp=1522450895874, value=kw 1 row(s) in 0.1910 seconds
(8)列族中增加字段
hbase(main):004:0> put 'user1','1232456','info1:age','23' 0 row(s) in 0.0270 seconds
hbase(main):005:0> scan ‘user1’
ROW COLUMN+CELL
1232456 column=info1:age, timestamp=1522450938635, value=23
1232456 column=info1:name, timestamp=1522450895874, value=kw
1 row(s) in 0.0730 seconds
(9)统计行数
hbase(main):011:0> count 'user1' 1 row(s) in 0.1290 seconds => 1
(10)获取一个列族的数据
hbase(main):013:0> get 'user1','1232456','info1' COLUMN CELL info1:age timestamp=1522450938635, value=23 info1:name timestamp=1522450895874, value=kw 2 row(s) in 0.0400 seconds
(11)如果插入键值、列族、属性相同的属性,这个时候起到了更新的作用
hbase(main):018:0> put 'user1','1232456','info1:age','20' 0 row(s) in 0.0130 seconds hbase(main):019:0> scan 'user1' ROW COLUMN+CELL 1232456 column=info1:age, timestamp=1522453126526, value=20 1232456 column=info1:name, timestamp=1522450895874, value=kw 1 row(s) in 0.1330 seconds
(12)获取指定的属性,选取时间戳最新的数据显示
hbase(main):022:0> get 'user1','1232456','info1:age' COLUMN CELL info1:age timestamp=1522453126526, value=20 1 row(s) in 0.0450 seconds
(13)删除数据
hbase(main):023:0> delete 'user1','1232456','info1:age' 0 row(s) in 0.2380 seconds hbase(main):024:0> describe 'user1' DESCRIPTION ENABLED 'user1', {NAME => 'info1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0' true , VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => '2147483647', KEEP_DELETED_CELLS = > 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'} 1 row(s) in 0.2180 seconds hbase(main):025:0> scan 'user1' ROW COLUMN+CELL 1232456 column=info1:name, timestamp=1522450895874, value=kw 1 row(s) in 0.0370 seconds
(14)删除所有
hbase(main):030:0> deleteall 'user1','1232456' 0 row(s) in 0.0210 seconds
hbase(main):031:0> list
TABLE
user1
1 row(s) in 0.1370 seconds
=> [“user1”]
hbase(main):032:0>
他只是将表中的列族删除了吗,表的删除需要使用disable,然后drop就可以了。
表都删了,那就不练了