安装sqoop 1.99.4

参考http://sqoop.apache.org/docs/1.99.4/Installation.html

1.简介

sqoop2分为server和client两部分。server作为maprde的客户端，必须安装在hadoop集群上。client无需安装在hadoop集群上，任何机器均可。

2.安装server

    server必须安装在hadoop结点上，namenode和datanode均可。测试是否安装交配置hadoop：

[root@node2 ~]# $HADOOP_PREFIX/bin/hdfs dfs -ls /
Found 4 items
drwxr-xr-x   - root supergroup          0 2016-02-25 18:44 /hbase
drwxr-xr-x   - root supergroup          0 2015-12-31 12:22 /test
drwxrwxr-x   - root supergroup          0 2015-12-31 21:30 /tmp
drwxr-xr-x   - root supergroup          0 2015-12-31 20:50 /user

实际上server需要读取namenode和resourcemanager的配置信息，并不依赖这些服务。

1)修改

server/conf/catalina.properties 中hadoop的lib路径：

common.loader中加入

,/usr/local/hadoop-2.6.3/share/hadoop/common/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/common/lib/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/hdfs/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/hdfs/lib/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/mapreduce/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/mapreduce/lib/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/tools/lib/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/yarn/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/yarn/lib/*.jar,/usr/local/hadoop-2.6.3/share/hadoop/httpfs/tomcat/lib/*.jar

2)启动server

官网的文档已经过时，无法执行bin/sqoop2-server start这样的命令。执行：

bin/sqoop.sh server start

查看日志：

Caused by: org.apache.sqoop.common.SqoopException: MAPREDUCE_0002:Failure on submission engine initialization - Invalid Hadoop configuration 

directory (not a directory or permission issues): /etc/hadoop/conf/

不知道哪个地方配置了/etc/hadoop/conf，根本没有这目录。百度一下：http://www.myexception.cn/database/1600202.html

修改为/usr/local/hadoop-2.6.3/etc/hadoop/

3.client

    clinet无需要配置。把server所在机器的sqoop-1.99.3复制到其它机器上即可，然后执行

#bin/sqoop.sh client

sqoop:000> set server --host node1 --port 12000 --webApp sqoop即可连接server执行命令

来自为知笔记(Wiz)