Hadoop needs just a few pieces of information to answer my first and second questions: namely, which inputs to process and how to handle map and reduce.

Hadoop只需要几条信息就可以回答我的第一个和第二个问题：即，要处理哪条输入以及如何处理map和reduce。

youdao

The Dash Express also supports WiFi to handle more bandwidth-intensive but less-frequent tasks such as downloading map or system updates.

ENGADGET: Switched On: Dash delivers open roads, open questions (Part 1)