Hbase——开源分布式数据库

BigData

版本控制

    @Title          Hbase——开源分布式数据库
    @Version        v1.0
    @Timestamp      2016-01-22 14:18
    @Author         Nicholas
    @Mail           redskirt@outlook.com

一、Hbase概述

• Google BigTable的开源实现
• 分布式数据库
• 列式存储
• NoSql

• 基于HDFS和Zookeeper

  [root@master ~]# hbase shell
  16/01/27 11:00:10 INFO Configuration.deprecation: hadoop.native.lib is deprecated. Instead, use io.native.lib.available
  HBase Shell; enter 'help<RETURN>' for list of supported commands.
  Type "exit<RETURN>" to leave the HBase Shell
  Version 0.98.6-cdh5.3.8, rUnknown, Wed Oct 14 17:29:57 PDT 2015
  # 创建表
  hbase(main):015:0* create 'table1', 'fml'
  0 row(s) in 1.1840 seconds
  => Hbase::Table - table1
  # 查看表
  hbase(main):016:0> list
  TABLE                                                                           mopishv3                                                                        table1                                                                                                                                
  2 row(s) in 0.0090 seconds
  => ["mopishv3", "table1"]
  # 查看表结构
  hbase(main):017:0> describe 'table1'
  DESCRIPTION ENABLED                                        
   'table1', {NAME => 'fml', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLIC true ATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}                             1 row(s) in 0.0310 seconds
  # 修改列属性
  hbase(main):005:0> alter 'table1', NAME => 'fml', BLOOMFILTER => 'NONE'
  Updating all regions with the new schema...
  0/1 regions updated.
  1/1 regions updated.
  Done.
  0 row(s) in 2.2390 seconds
  hbase(main):006:0> describe 'table1'
  DESCRIPTION ENABLED                                        
   'table1', {NAME => 'fml', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLI true CATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}                         
  1 row(s) in 0.0270 seconds 
  # 定义表属性
  hbase(main):014:0> alter 'table1', MAX_FILESIZE => '134217728'
  Updating all regions with the new schema...
  0/1 regions updated.
  1/1 regions updated.
  Done.
  0 row(s) in 2.1780 seconds
  hbase(main):016:0> describe 'table1'
  DESCRIPTION ENABLED                                        
   'table1', {TABLE_ATTRIBUTES => {MAX_FILESIZE => '134217728'}, {NAME => 'fml', DATA_BL true OCK_ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}                                                       
  1 row(s) in 0.0280 seconds
  # 删除表属性
  hbase(main):018:0* alter 'table1', METHOD => 'table_att_unset', NAME => 'MAX_FILESIZE'
  Updating all regions with the new schema...
  0/1 regions updated.
  1/1 regions updated.
  Done.
  0 row(s) in 2.1390 seconds
  # 添加列族
  hbase(main):023:0> alter 'table1', NAME=>'fml2'
  Updating all regions with the new schema...
  0/1 regions updated.
  1/1 regions updated.
  Done.
  0 row(s) in 2.1720 seconds
  # 删除列族
  hbase(main):024:0> alter 'table1', METHOD=>'delete', NAME=>'fml2'
  Updating all regions with the new schema...
  0/1 regions updated.
  1/1 regions updated.
  Done.
  0 row(s) in 2.1810 seconds
  # 停止表服务
  hbase(main):029:0> disable 'table1'
  0 row(s) in 1.3050 seconds
  hbase(main):030:0> describe 'table1'
  DESCRIPTION ENABLED                                        
   'table1', {NAME => 'fml', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLI false CATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}                              
  1 row(s) in 0.0380 seconds
  # 删除表
  hbase(main):031:0> drop 'table1'
  0 row(s) in 0.1990 seconds

  # put
  hbase(main):045:0> put 'table2', "rowkey1", 'col1:test', "test01_value"
  0 row(s) in 0.2160 seconds
  # get
  hbase(main):046:0> get 'table2', "rowkey1"
  COLUMN                                 CELL                                                                                                         
   col1:test                             timestamp=1453881130302, value=test01_value                                                          
  1 row(s) in 0.0430 seconds
  # scan