PERFORMANCE: streaming data to aggregate functions
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Key: PIG-484
URL: https://issues.apache.org/jira/browse/PIG-484
Project: Pig
Issue Type: Improvement
Affects Versions: types_branch
Reporter: Olga Natkovich
Fix For: types_branch
Currently, for queries like
A = load 'data';
B = group A by $0;
C = foreach A generate group, MIN(A.$1), MAX (A.$1)
The data will be put into the bag before being passed to aggregate functions.
This is unnecessary and inefficient. In this case, data can be just streamed to
the functions.
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