tree 9a9b4ec39045582c60a7716193f1b2cdc67c4202
parent 55f0f20dae6faeaf40c9b616beaf3c3d4c09f007
author salsubaiee <salsubaiee@123451ca-8445-de46-9d55-352943316053> 1329340828 +0000
committer salsubaiee <salsubaiee@123451ca-8445-de46-9d55-352943316053> 1329340828 +0000

- Fixed a potential bug in the RTree delete that could happen when a deleter latch the root page while it is leaf and when it wants to upgrade the latch to write latch the root is no longer a leaf page.
- Catched BTree key non existence key exception that should not normally occur if we are dealing with good citizens, we only see in the multi-threading tests because we are using random data. 
- Made sure all lacthes in the RTree are released in case of a crash.

git-svn-id: https://hyracks.googlecode.com/svn/branches/hyracks_lsm_tree@1196 123451ca-8445-de46-9d55-352943316053