Hadoop生态圈-phoenix（HBase）的索引配置

　　　　　　　　　　　　　　　　　　　　Hadoop生态圈-phoenix（HBase）的索引配置

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰

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　　创建索引是为了优化查询，我们可以在phoenix上配置索引方式。

一.修改hbase配置文件，以便支持索引

 1>.xrsync.sh 脚本内容

 [yinzhengjie@s101 ~]$ more `which xrsync.sh`
 #!/bin/bash
 #@author :yinzhengjie
 #blog:http://www.cnblogs.com/yinzhengjie
 #EMAIL:y1053419035@qq.com

 #判断用户是否传参
 if [ $# -lt  ];then
     echo "请输入参数";
     exit
 fi

 #获取文件路径
 file=$@

 #获取子路径
 filename=`basename $file`

 #获取父路径
 dirpath=`dirname $file`

 #获取完整路径
 cd $dirpath
 fullpath=`pwd -P`

 #同步文件到DataNode
 for (( i=;i<=;i++ ))
 do
     #使终端变绿色
     tput setaf
     echo =========== s$i %file ===========
     #使终端变回原来的颜色，即白灰色
     tput setaf
     #远程执行命令
     rsync -lr $filename `whoami`@s$i:$fullpath
     #判断命令是否执行成功
     if [ $? ==  ];then
         echo "命令执行成功"
     fi
 done
 [yinzhengjie@s101 ~]$ 

2>.修改hbase配置文件，以便支持索引

 3>.重启hbase

[yinzhengjie@s101 ~]$ stop-hbase.sh
stopping hbase..................
[yinzhengjie@s101 ~]$ start-hbase.sh
starting master, logging to /soft/hbase/bin/../logs/hbase-yinzhengjie-master-s101.out
Java HotSpot(TM) -Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) -Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
s102: starting regionserver, logging to /soft/hbase/bin/../logs/hbase-yinzhengjie-regionserver-s102.out
s103: starting regionserver, logging to /soft/hbase/bin/../logs/hbase-yinzhengjie-regionserver-s103.out
s104: starting regionserver, logging to /soft/hbase/bin/../logs/hbase-yinzhengjie-regionserver-s104.out
s102: Java HotSpot(TM) -Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s102: Java HotSpot(TM) -Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
s103: Java HotSpot(TM) -Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s103: Java HotSpot(TM) -Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
s104: Java HotSpot(TM) -Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s104: Java HotSpot(TM) -Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
[yinzhengjie@s101 ~]$ 

二.设置索引方式

　　注意：创建表的时候，如果需要创建索引，表必须在hbase默认namespace中。

1>.创建表

2>.全局索引（读多写少，局限在于影响写入性能，但是可以搜索全字段）

2>.覆盖索引（局限性在于只能搜索到name,即搜索name性能最高）

3>.本地索引（写多读少,在于通过本地维护索引，索引在每次搜索，都会用到） 

4>.删除索引