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 1 ];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=102;i<=105;i++ ))
do
    #使终端变绿色 
    tput setaf 2
    echo =========== s$i %file ===========
    #使终端变回原来的颜色，即白灰色
    tput setaf 7
    #远程执行命令
    rsync -lr $filename `whoami`@s$i:$fullpath
    #判断命令是否执行成功
    if [ $? == 0 ];then
        echo "命令执行成功"
    fi
done
[yinzhengjie@s101 ~]$ 

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) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) 64-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) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s102: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
s103: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s103: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
s104: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
s104: Java HotSpot(TM) 64-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