ETL 是一切数据仓库应用的基础。CloverETL 是一个基于 Java 的开源的 ETL 框架，同时还包含了一个 ETL设计器----CloverETL Designer。核心的算法就是一个数据流网络。
CloverETL 3.3.1 改进记录：
Tracking is reported in % (e.g. now it's "30%" vs the previous "0.3").
XMLExtract: autofilling did not work.
SystemExecute will not delete a temp file if the component fails.
Recapacity of CloverBuffer was not allowed.
The CTLUtils class could not be used in transformations.
Incorrect last modification date on SFTP has been fixed.
The org.jetel.license dependency has been removed from the org.jetel.component plugin
项目主页：http://www.cloveretl.com/
下载地址：http://www.cloveretl.com/download/
来自:开源中国社区
