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https://issues.apache.org/jira/browse/HIVE-20486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16664118#comment-16664118
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slim bouguerra commented on HIVE-20486:
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[~gopalv] i reverted the extra refactoring.
> Kafka: Use Row SerDe + vectorization
> ------------------------------------
>
> Key: HIVE-20486
> URL: https://issues.apache.org/jira/browse/HIVE-20486
> Project: Hive
> Issue Type: Improvement
> Components: kafka integration
> Reporter: Gopal V
> Assignee: slim bouguerra
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-20486.3.patch, HIVE-20486.patch
>
>
> 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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