The design doc in Hive's wiki page provides some high level descriptions. See http://wiki.apache.org/hadoop/Hive/Design the "compilation" and "optimization" sections.
Ning On Oct 13, 2009, at 4:09 AM, bharath vissapragada wrote: > Hi all , > > We are trying to work on the Optimizer part of hive . Can anyone > point me to a document/link containing how Hive designs it's query > plans , > what meta data it uses , how it optimizes the plans (pushing down > selects etc) ... Iam facing difficulties is reading the source > code , so it would > be nice if any one point me to the link containing the above data or > any document containing the same. > > Any help is highly appreciated ! > > Thanks !
