Reynold Xin created SPARK-14451:
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Summary: Move encoder definition into Aggregator interface
Key: SPARK-14451
URL: https://issues.apache.org/jira/browse/SPARK-14451
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Reynold Xin
Assignee: Reynold Xin
When we first introduced Aggregators, we required the user of Aggregators to
(implicitly) specify the encoders. It would actually make more sense to have
the encoders be specified by the implementation of Aggregators, since each
implementation should have the most state about how to encode its own data type.
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