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DiffDB are made of DiffIndexer and DiffSearcher.

The DiffIndexer takes as raw input the diffs generated by Wikihadoop and creates a Lucene-based index. The DiffSearcher allows you to query the index so you can answer questions such as:

  • Who has added template X in the last month?
  • Who added more than 2000 characters to user talk pages in 2008?


There is no publication about this tool yet.