sqoop配置与使用

1.下载 http://archive.cloudera.com/cdh/3/sqoop-1.2.0-CDH3B4.tar.gz

2.下载 http://archive.cloudera.com/cdh/3/hadoop-0.20.2-CDH3B4.tar.gz

3.解压 2

4.复制3里hadoop-core-0.20.2-CDH3B4.jar到sqoop的lib下

5.在某处复制mysql-connector-java-5.1.10.jar到sqoop的lib下

6.修改configure-sqoop

注释掉hbase zookeeper检查：
#if [ ! -d "${HBASE_HOME}" ]; then
# echo “Error: $HBASE_HOME does not exist!”
# echo ‘Please set $HBASE_HOME to the root of your HBase installation.’
# exit 1
#fi
#if [ ! -d "${ZOOKEEPER_HOME}" ]; then
# echo “Error: $ZOOKEEPER_HOME does not exist!”
# echo ‘Please set $ZOOKEEPER_HOME to the root of your ZooKeeper installation.’
# exit 1
#fi

7.运行：
列出mysql所有的表：

./sqoop list-tables –connect jdbc:mysql://127.0.0.1/operation –username root –password 123

将mysql中的表导入hive中：

$ sqoop import --connect jdbc:mysql://IP:PORT/DATABASE --username USERNAME --password PASSWORD --table TABLE --hive-import  

如果曾经执行失败过，那再执行的时候，会有错误提示：

ERROR tool.ImportTool: Encountered IOException running import job: org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory xxx already exists

执行 $HADOOP_HOME/bin/hadoop fs -rmr xxx 即可