Hive扩展功能(一)--Parquet

软件环境:

linux系统: CentOS6.7
Hadoop版本: 2.6.5
zookeeper版本: 3.4.8

##主机配置:
######一共m1, m2, m3这五部机, 每部主机的用户名都为centos
```
192.168.179.201: m1
192.168.179.202: m2
192.168.179.203: m3

m1: Zookeeper, Namenode, DataNode, ResourceManager, NodeManager, Master, Worker

m2: Zookeeper, Namenode, DataNode, ResourceManager, NodeManager, Worker

m3: Zookeeper, DataNode, NodeManager, Worker

#####资料:

官方资料:

https://cwiki.apache.org/confluence/display/Hive/Parquet

#####注意:

Hive扩展Parquet有以下两种方案:(hive自0.13版本以后已自带paruqet功能, 不必再扩展parquet功能)

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####1.方案一:
####(1) 下载Parquet扩展包
 通过yum下载parquet资源包 (此方案大多数情况下无法找到parquet, 原因是没有配置YUM源, 如何配置YUM源请自行查找资料)

sudo yum -y install parquet

######(2)将下载好的扩展包拷贝到指定位置
将下载到`/usr/lib/parquet`目录下的`jar`(除`javadoc.jar`和`sources.jar`外)拷贝到$HIVE_HOME/lib目录下

cp /usr/lib/parquet/* $HIVE_HOME/lib

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####2.方案二:
####(1)打开```$HIVE_HOME/lib```目录

cd /home/centos/soft/hive/lib

####(2)下载Parquet资源包
执行以下指令, 下载parquet资源包(注意:`parquet1.2.5`版本对应`Hive 0.12`版本,每个版本的Hive对应的Parquet版本不同, 具体Hive所对应的版本请自行下载源码查看)

for f in parquet-avro parquet-cascading parquet-column parquet-common parquet-encoding parquet-generator parquet-hadoop parquet-hive parquet-pig parquet-pig-bundle parquet-scrooge parquet-test-hadoop2 parquet-thrift

do

curl -O https://oss.sonatype.org/service/local/repositories/releases/content/com/twitter/${f}/1.2.5/${f}-1.2.5.jar

curl -O https://oss.sonatype.org/service/local/repositories/releases/content/com/twitter/parquet-format/1.2.5/parquet-format-1.2.5.jar

done

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