HBase基础之常用过滤器hbase shell操作

最近需要对hbase进行性能优化，苦于对hbase的scan命令语法不熟悉，遂网上搜了点资料，觉得不错，给予记下。

 

 

创建表

create 'test1', 'lf', 'sf'

lf: column family of LONG values (binary value)

-- sf: column family of STRING values

 

导入数据

put 'test1', 'user1|ts1', 'sf:c1', 'sku1'
put 'test1', 'user1|ts2', 'sf:c1', 'sku188'
put 'test1', 'user1|ts3', 'sf:s1', 'sku123'

put 'test1', 'user2|ts4', 'sf:c1', 'sku2'
put 'test1', 'user2|ts5', 'sf:c2', 'sku288'
put 'test1', 'user2|ts6', 'sf:s1', 'sku222'

一个用户（userX），在什么时间（tsX），作为rowkey

 

对什么产品（value：skuXXX），做了什么操作作为列名，比如，c1: click from homepage; c2: click from ad; s1: search from homepage; b1: buy

 

查询案例

 

谁的值=sku188

 

scan 'test1', FILTER=>"ValueFilter(=,'binary:sku188')"

ROW                          COLUMN+CELL                    
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188

 

谁的值包含88

 

scan 'test1', FILTER=>"ValueFilter(=,'substring:88')"

ROW                          COLUMN+CELL    
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user2|ts5                   column=sf:c2, timestamp=1409122355030, value=sku288

  

 

通过广告点击进来的(column为c2)值包含88的用户

 

scan 'test1', FILTER=>"ColumnPrefixFilter('c2') AND ValueFilter(=,'substring:88')"

 

ROW                          COLUMN+CELL

 user2|ts5                   column=sf:c2, timestamp=1409122355030, value=sku288

通过搜索进来的(column为s)值包含123或者222的用户

 

scan 'test1', FILTER=>"ColumnPrefixFilter('s') AND ( ValueFilter(=,'substring:123') OR ValueFilter(=,'substring:222') )"

ROW                          COLUMN+CELL
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123
 user2|ts6                   column=sf:s1, timestamp=1409122355970, value=sku222

 

rowkey为user1开头的

 

scan 'test1', FILTER => "PrefixFilter ('user1')"

ROW                          COLUMN+CELL
 user1|ts1                   column=sf:c1, timestamp=1409122354868, value=sku1
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123

 

FirstKeyOnlyFilter: 一个rowkey可以有多个version,同一个rowkey的同一个column也会有多个的值, 只拿出key中的第一个column的第一个version

KeyOnlyFilter: 只要key,不要value

scan 'test1', FILTER=>"FirstKeyOnlyFilter() AND ValueFilter(=,'binary:sku188') AND KeyOnlyFilter()"

ROW                          COLUMN+CELL
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=

 

从user1|ts2开始,找到所有的rowkey以user1开头的

 

scan 'test1', {STARTROW=>'user1|ts2', FILTER => "PrefixFilter ('user1')"}

ROW                          COLUMN+CELL
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123 

 

从user1|ts2开始,找到所有的到rowkey以user2开头

 

scan 'test1', {STARTROW=>'user1|ts2', STOPROW=>'user2'}

ROW                          COLUMN+CELL
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123

查询rowkey里面包含ts3的

import org.apache.hadoop.hbase.filter.CompareFilter
import org.apache.hadoop.hbase.filter.SubstringComparator
import org.apache.hadoop.hbase.filter.RowFilter
scan 'test1', {FILTER => RowFilter.new(CompareFilter::CompareOp.valueOf('EQUAL'), SubstringComparator.new('ts3'))}
ROW                          COLUMN+CELL
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123 

查询rowkey里面包含ts的

import org.apache.hadoop.hbase.filter.CompareFilter
import org.apache.hadoop.hbase.filter.SubstringComparator
import org.apache.hadoop.hbase.filter.RowFilter
scan 'test1', {FILTER => RowFilter.new(CompareFilter::CompareOp.valueOf('EQUAL'), SubstringComparator.new('ts'))}
 
ROW                          COLUMN+CELL
 user1|ts1                   column=sf:c1, timestamp=1409122354868, value=sku1
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123
 user2|ts4                   column=sf:c1, timestamp=1409122354998, value=sku2
 user2|ts5                   column=sf:c2, timestamp=1409122355030, value=sku288
 user2|ts6                   column=sf:s1, timestamp=1409122355970, value=sku222

 

加入一条测试数据

put 'test1', 'user2|err', 'sf:s1', 'sku999'

查询rowkey里面以user开头的，新加入的测试数据并不符合正则表达式的规则，故查询不出来

import org.apache.hadoop.hbase.filter.RegexStringComparator
import org.apache.hadoop.hbase.filter.CompareFilter
import org.apache.hadoop.hbase.filter.SubstringComparator
import org.apache.hadoop.hbase.filter.RowFilter
scan 'test1', {FILTER => RowFilter.new(CompareFilter::CompareOp.valueOf('EQUAL'),RegexStringComparator.new('^user\d+\|ts\d+$'))}

ROW                          COLUMN+CELL
 user1|ts1                   column=sf:c1, timestamp=1409122354868, value=sku1
 user1|ts2                   column=sf:c1, timestamp=1409122354918, value=sku188
 user1|ts3                   column=sf:s1, timestamp=1409122354954, value=sku123
 user2|ts4                   column=sf:c1, timestamp=1409122354998, value=sku2
 user2|ts5                   column=sf:c2, timestamp=1409122355030, value=sku288
 user2|ts6                   column=sf:s1, timestamp=1409122355970, value=sku222

加入测试数据

put 'test1', 'user1|ts9', 'sf:b1', 'sku1'

b1开头的列中并且值为sku1的

scan 'test1', FILTER=>"ColumnPrefixFilter('b1') AND ValueFilter(=,'binary:sku1')"
 
ROW                          COLUMN+CELL                                                                       
 user1|ts9                   column=sf:b1, timestamp=1409124908668, value=sku1

SingleColumnValueFilter的使用，b1开头的列中并且值为sku1的

import org.apache.hadoop.hbase.filter.CompareFilter
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter
import org.apache.hadoop.hbase.filter.SubstringComparator
scan 'test1', {COLUMNS => 'sf:b1', FILTER => SingleColumnValueFilter.new(Bytes.toBytes('sf'), Bytes.toBytes('b1'), CompareFilter::CompareOp.valueOf('EQUAL'), Bytes.toBytes('sku1'))}
 
ROW                          COLUMN+CELL
 user1|ts9                   column=sf:b1, timestamp=1409124908668, value=sku1

hbase zkcli 的使用

hbase zkcli
ls /
[hbase, zookeeper]
 
[zk: hadoop000:2181(CONNECTED) 1] ls /hbase
[meta-region-server, backup-masters, table, draining, region-in-transition, running, table-lock, master, namespace, hbaseid, online-snapshot, replication, splitWAL, recovering-regions, rs]
 
[zk: hadoop000:2181(CONNECTED) 2] ls /hbase/table
[member, test1, hbase:meta, hbase:namespace]
 
[zk: hadoop000:2181(CONNECTED) 3] ls /hbase/table/test1
[]
 
[zk: hadoop000:2181(CONNECTED) 4] get /hbase/table/test1
?master:60000}l$??lPBUF
cZxid = 0x107
ctime = Wed Aug 27 14:52:21 HKT 2014
mZxid = 0x10b
mtime = Wed Aug 27 14:52:22 HKT 2014
pZxid = 0x107
cversion = 0
dataVersion = 2
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 31
numChildren = 0

 

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