Free Large datasets to experiment with Hadoop

Question

Do you know any large dataset to experiment with Hadoop which is free/low cost? Any pointers/links related are appreciated.

Preference:

• At least one

Answer 1

Few points about your question regarding crawling and wikipedia.

You have linked to the wikipedia data dumps and you can use the Cloud9 project from UMD to work with this data in Hadoop.

They have a page on this: Working with Wikipedia

Another datasource to add to the list is:

• ClueWeb09 - 1 billion webpages collected between Jan and Feb 09. 5TB Compressed.

Using a crawler to generate data should be posted in a separate question to one about Hadoop/MapReduce I would say.