sqoop安装和基本操作

1、简介

2、安装

3. sqoop导入hdfs

注意（Hadoop集群搭建好）

1、简介

sqoop是apache旗下一款“Hadoop和关系数据库服务器之间传送数据”的工具。

导入数据：MySQL，Oracle导入数据到Hadoop的HDFS、HIVE、HBASE等数据存储系统；

导出数据：从Hadoop的文件系统中导出数据到关系数据库

2、安装

2.1 下载sqoop1：
sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz(下载带*bin__hadoop-2.6.0,要不后面安装会报错)

[hadoop@hadoop01 ~]$ tar -zxvf sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz --解压
[hadoop@hadoop01 ~]$ cd sqoop-1.4.7.bin__hadoop-2.6.0
[hadoop@hadoop01 sqoop-1.4.7.bin__hadoop-2.6.0]$ ls -ll -查看目录
total 2020
drwxr-xr-x. 2 hadoop hadoop    4096 Dec 19  2017 bin
-rw-rw-r--. 1 hadoop hadoop   55089 Dec 19  2017 build.xml
-rw-rw-r--. 1 hadoop hadoop   47426 Dec 19  2017 CHANGELOG.txt
-rw-rw-r--. 1 hadoop hadoop    9880 Dec 19  2017 COMPILING.txt
drwxr-xr-x. 2 hadoop hadoop     150 Dec 19  2017 conf
drwxr-xr-x. 5 hadoop hadoop     169 Dec 19  2017 docs
drwxr-xr-x. 2 hadoop hadoop      96 Dec 19  2017 ivy
-rw-rw-r--. 1 hadoop hadoop   11163 Dec 19  2017 ivy.xml
drwxr-xr-x. 2 hadoop hadoop    4096 Dec 19  2017 lib
-rw-rw-r--. 1 hadoop hadoop   15419 Dec 19  2017 LICENSE.txt
-rw-rw-r--. 1 hadoop hadoop     505 Dec 19  2017 NOTICE.txt
-rw-rw-r--. 1 hadoop hadoop   18772 Dec 19  2017 pom-old.xml
-rw-rw-r--. 1 hadoop hadoop    1096 Dec 19  2017 README.txt
-rw-rw-r--. 1 hadoop hadoop 1108073 Dec 19  2017 sqoop-1.4.7.jar
-rw-rw-r--. 1 hadoop hadoop    6554 Dec 19  2017 sqoop-patch-review.py
-rw-rw-r--. 1 hadoop hadoop  765184 Dec 19  2017 sqoop-test-1.4.7.jar
drwxr-xr-x. 7 hadoop hadoop      73 Dec 19  2017 src
drwxr-xr-x. 4 hadoop hadoop     114 Dec 19  2017 testdata

2.2 配置sqoop——mysql连接器：
下载mysql-connector-java-8.0.16.jar，并将其拷贝至sqoop安装目录下的lib文件夹里。

2.3 配置sqoop环境变量：

[hadoop@hadoop01 sqoop-1.4.7.bin__hadoop-2.6.0]$ cd conf
[hadoop@hadoop01 conf]$ ls -ll
total 28
-rw-rw-r--. 1 hadoop hadoop 3895 Dec 19  2017 oraoop-site-template.xml
-rw-rw-r--. 1 hadoop hadoop 1404 Dec 19  2017 sqoop-env-template.cmd
-rwxr-xr-x. 1 hadoop hadoop 1345 Dec 19  2017 sqoop-env-template.sh
-rw-rw-r--. 1 hadoop hadoop 6044 Dec 19  2017 sqoop-site-template.xml
-rw-rw-r--. 1 hadoop hadoop 6044 Dec 19  2017 sqoop-site.xml

2.3.1 拷贝复制sqoop-env.sh样本，并添加hadoop、hbase、hive、zookeeper的安装目录（注：没有的就不添加）

[hadoop@hadoop01 conf]$ cp sqoop-env-template.sh sqoop-env.sh
[hadoop@hadoop01 conf]$ gedit sqoop-env.sh
修改的内容：
#Set path to where bin/hadoop is available
export HADOOP_COMMON_HOME=/home/hadoop/hadoop-3.2.0

#Set path to where hadoop-*-core.jar is available
export HADOOP_MAPRED_HOME=/home/hadoop/hadoop-3.2.0

#set the path to where bin/hbase is available
export HBASE_HOME=/home/hadoop/hbase-2.2.1

#Set the path to where bin/hive is available
export HIVE_HOME=/home/hadoop/apache-hive-3.1.2-bin

#Set the path for where zookeper config dir is
export ZOOCFGDIR=/home/hadoop/apache-zookeeper-3.5.5

2.3.2 配置linux环境变量

sudo vi /etc/profile
export SQOOP_HOME=/home/hadoop/sqoop-1.4.7.bin__hadoop-2.6.0
export PATH=$PATH:$SQOOP_HOME/bin


--------------------------------------------------
source /etc/profile

3.1 验证sqoop是否安装成功

[hadoop@hadoop01 sqoop-1.4.7.bin__hadoop-2.6.0]$ bin/sqoop help --执行该命令，看到如下信息就表示成功
Warning: /home/hadoop/sqoop-1.4.7.bin__hadoop-2.6.0/../hcatalog does not exist! HCatalog jobs will fail.
Please set $HCAT_HOME to the root of your HCatalog installation.
Warning: /home/hadoop/sqoop-1.4.7.bin__hadoop-2.6.0/../accumulo does not exist! Accumulo imports will fail.
Please set $ACCUMULO_HOME to the root of your Accumulo installation.
Warning: /home/hadoop/sqoop-1.4.7.bin__hadoop-2.6.0/../zookeeper does not exist! Accumulo imports will fail.
Please set $ZOOKEEPER_HOME to the root of your Zookeeper installation.
Error: Could not find or load main class org.apache.hadoop.hbase.util.GetJavaProperty
2019-09-29 23:38:28,571 INFO sqoop.Sqoop: Running Sqoop version: 1.4.7
usage: sqoop COMMAND [ARGS]
Available commands:
  codegen            Generate code to interact with database records
  create-hive-table  Import a table definition into Hive
  eval               Evaluate a SQL statement and display the results
  export             Export an HDFS directory to a database table
  help               List available commands
  import             Import a table from a database to HDFS
  import-all-tables  Import tables from a database to HDFS
  import-mainframe   Import datasets from a mainframe server to HDFS
  job                Work with saved jobs
  list-databases     List available databases on a server
  list-tables        List available tables in a database
  merge              Merge results of incremental imports
  metastore          Run a standalone Sqoop metastore
  version            Display version information

See 'sqoop help COMMAND' for information on a specific command.
[hadoop@hadoop01 sqoop-1.4.7.bin__hadoop-2.6.0]$

4.1 测试sqoop与mysql的连接

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

3. sqoop导入hdfs

3.1导入前准备：

use test_db
CREATE TABLE hello
(
    id INT(11),
    name VARCHAR(25),
    deptId INT(11),
    salary FLOAT
);
insert into hello values(01,'gopal',2,0.3);
insert into hello values(02,'manis',3,0.3);
insert into hello values(03,'khali',4,0.3);
insert into hello values(04,'prasa',5,0.3);
insert into hello values(05,'krant',6,0.3);

3.2导入：

sqoop import   \
--connect  jdbc:mysql://192.168.195.131:3306/test_db \
--username root  \
--password root   \
--table hello   \
--m 1

3.3结果：

参照：

https://blog.csdn.net/yumingzhu1/article/details/80678525

来源：CSDN

作者：Lawrence_121

链接：https://blog.csdn.net/m0_37806112/article/details/103646205

标签

sqoop

Hadoop

hadoop集群搭建