Sqoop的連線方式

Sqoop提供兩種連線方式 (Connection vs Job meta)：

• Connection (distinct per database)
• Job (distinct per table)

運作原理如下：

1. Connectors register metadata
2. Metadata enables creation of connections and jobs
3. Connections and jobs stored in metadata repository
4. Operator runs jobs that use appropriate connections
5. Admin set policy for connection use

Reference

http://lab.howie.tw/2013/04/ApacheCon2013-Mastering-Sqoop-for-Data-Transfer-for-Big-Data.html