Accumulators should be able to early-terminate
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Key: PIG-2066
URL: https://issues.apache.org/jira/browse/PIG-2066
Project: Pig
Issue Type: New Feature
Reporter: Dmitriy V. Ryaboy
Accumulators are currently forced to process the whole bag; getValue() is
called at the very end.
Early termination is a handy feature to be able to use (for IsEmpty, for
example).
We can add this as a new interface extending Accumulator.
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