Hi, I use the HiveStoragePredicateHandler interface on my storage handler to be able to push down filters to my record reader for early pruning. It seems like the IndexPredicateAnalyzer is a bit limited on what expression that could be pushed down.
>From a comment in IndexPredicateAnalyzer: "We can only push down stuff which appears as part of a pure conjunction: reject OR, CASE, etc." As such I can push down simple AND expressions in my where clause (and also IN RLIKE and LIKE) but I cannot use OR. Does anybody know why this limitation exists? A guess from my side is that it was originally developed for HBASE integration where OR expressions might not translate well. Having other data sources with custom indexes (or relational databases for that matter) would benefit from being able to handle a wider spectrum of expression. Thanks, Petter
