Tag Archives: Support

5 Common Questions About Apache Hadoop

Categories: General Hadoop

There’s been a lot of buzz about Apache Hadoop lately. Just the other day, some of our friends at Yahoo! reclaimed the terasort record from Google using Hadoop, and the folks at Facebook let on that they ingest 15 terabytes a day into their 2.5 petabyte Hadoop-powered data warehouse.

But many people still find themselves wondering just how all this works, and what it means to them. We get a lot of common questions while working with customers,

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Job Scheduling in Apache Hadoop

Categories: Hadoop MapReduce

(guest blog post by Matei Zaharia)

When Apache Hadoop started out, it was designed mainly for running large batch jobs such as web indexing and log mining. Users submitted jobs to a queue, and the cluster ran them in order. However, as organizations placed more data in their Hadoop clusters and developed more computations they wanted to run, another use case became attractive: sharing a MapReduce cluster between multiple users.

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