When input data is provided (into the Hadoop file system [HDFS]), it is first partitioned, and then distributed to map workers (via the job tracker).

在提供输入数据时(进入Hadoop文件系统[hdfs])，首先分段，然后分配给map工作线程(通过作业跟踪器)。

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It previews the changes that you are about to commit and, for contributors without commit privileges, it can file changes as a patch in the project's issue tracker.

该功能将会显示你即将提交的代码预览，那些没有提交修改权限的用户则可以以补丁的形式在项目的追踪中提出内容修改。

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