tree ca49f17fd06517f96921bb9ab60fd5660752cb2e
parent f4a3c5d673b576de56d46454f1f2b0ce6c0f023a
author alexander.behm <alexander.behm@123451ca-8445-de46-9d55-352943316053> 1304834578 +0000
committer alexander.behm <alexander.behm@123451ca-8445-de46-9d55-352943316053> 1304834578 +0000

1. Fixed BTree bug where the insertion of a duplicate key that would cause a split (if it wasn't a duplicate) leads to allocation of a new page that is never used. This bug did not affect correctness, only performance, i.e., the file size.
2. Added utility to gather stats for tree-based indexes (tree height, num tuples, fill factor, etc.).
3. Added utility to warm up buffer cache with pages at upper levels of a any tree-based index.

git-svn-id: https://hyracks.googlecode.com/svn/branches/hyracks_indexes@447 123451ca-8445-de46-9d55-352943316053