Gopal V created HIVE-20486:
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             Summary: Kafka: Use Row SerDe + vectorization
                 Key: HIVE-20486
                 URL: https://issues.apache.org/jira/browse/HIVE-20486
             Project: Hive
          Issue Type: Improvement
            Reporter: Gopal V


KafkaHandler returns unvectorized rows which causes the operators downstream to 
be slower and sub-optimal.

Hive has a vectorization shim which allows Kafka streams without complex 
projections to be wrapped into a vectorized reader via 
{{hive.vectorized.use.row.serde.deserialize}}.



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