Use a database. This is exactly what a database is designed to do. Any work you do would simply be replicating what has literally had man-DECADES thrown at it.
  1. Load files into a database. 2M rows and 8M rows are small-ish tables.
  2. Run SQL queries against those tables.
My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to Re: Searching Huge files by dragonchild
in thread Searching Huge files by biomonk

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