I had a chat with a couple people last week about a feature request for Pig: in a "where" or "filter" clause, when loading an ORC file, to skip directly to the right offset instead of scanning the whole file.
Hi, Andrew, Partition pruning for ORC is not addressed in PIG-3558. We will need to do partition pruning for both ORC and Parquet in a new ticket. Curently there is no interface to deal with this kind of pushdown (LoadMetadata.setPartitionFilter push the filter to loader, but remove the filter statement, for ORC/Parquet, filter is a hint, and we need to do the filter again in Pig even it is pushed to loader), we will need to define a new interface for that. You are welcome to initiate the work. I know Aniket is also interested in doing that, so be sure the talk with him about this work.
On Mon, Feb 10, 2014 at 11:42 AM, Andrew Musselman <[EMAIL PROTECTED]> wrote:
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Thanks Andrew On Mon, Feb 10, 2014 at 12:41 PM, Daniel Dai <[EMAIL PROTECTED]> wrote:
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