Sqoop是一個用來完成Hadoop和關係型資料庫中的資料相互轉移的工具，

他可以將關係型資料庫（MySql,Oracle,Postgres等）中的資料匯入Hadoop的HDFS中，

也可以將HDFS的資料匯入關係型資料庫中。

前期準備：

1.Sqoop需要安裝在成功部署的Hadoop平臺上，並且要求Hadoop已經正常啟動。hadoop叢集的搭建

2.安裝了mysql資料庫，並且已經啟動.CentOS安裝mysql原始碼包

3.下載mysql-connector-java-5.1.12.tar.gz。

安裝過程；

1.下載sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz壓縮包。

2.上傳至/usr/local/src

3.解壓縮並且移動到上級目錄（/usr/local）

4.解壓縮mysql-connector-java-5.1.12.tar.gz檔案，

並且複製檔案mysql-connector-java-5.1.12-bin.jar到/usr/local/sqoop-1.4.7.bin__hadoop-2.6.0/lib中。

5.配置環境變數　　

cd   /usr/local/sqoop-1.4.7.bin__hadoop-2.6.0/conf
cp sqoop-env-template.sh sqoop-env.sh
vim sqoop-env.sh

根據情況新增配置資訊 內容如下：

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the 
 
"License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# included in all the hadoop scripts with source command
# should not be executable directly
# also should not be passed any arguments, since we need original $*

# Set Hadoop-specific environment variables here.

#Set path to where bin/hadoop is available
export HADOOP_COMMON_HOME=/usr/local/hadoop-2.6.5

#Set path to where hadoop-*-core.jar is available
export HADOOP_MAPRED_HOME=/usr/local/hadoop-2.6.5

#set the path to where bin/hbase is available
export HBASE_HOME=/usr/local/hbase-1.4.8

#Set the path to where bin/hive is available
export HIVE_HOME=/usr/local/apache-hive-2.1.0-bin

#Set the path for where zookeper config dir is
export ZOOCFGDIR=/usr/local/zookeeper/conf

6.配置linux的環境變數

cd
vim .bash_profile

在結尾新增如下程式碼：

#sqoop
export SQOOP_HOME=/usr/local/sqoop-1.4.7.bin__hadoop-2.6.0/
export PATH=$PATH:$SQOOP_HOME/bin

7.儲存退出；時檔案生效：

source .bash_profile

8.測試與mysql的連線：

cd   /usr/local/sqoop-1.4.7.bin__hadoop-2.6.0/bin
sqoop list-databases --connect jdbc:mysql://localhost:3306 --username root -P

輸入密碼後會顯示具體的資料庫列表

9.檢視具體資料庫中的 表資訊：

sqoop list-tables --connect jdbc:mysql://localhost:3306/db1 --username root -P

10.執行查詢語句：

sqoop -eval --connect jdbc:mysql://localhost:3306/db1 --username root  -P --query "select * from a limit 5"