Hi team,
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Thanks,
Matheswaran.S
On Tue, Aug 14, 2018 at 6:00 AM Gopal V (JIRA) wrote:
> Gopal V created HIVE-20381:
> --
>
> Summary: Vectorization: Reduce dedup of GroupBy + PTF turns
> off vectorization
> Key: HIVE-20381
> URL: https://issues.apache.org/jira/browse/HIVE-20381
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 3.1.0, 4.0.0
> Reporter: Gopal V
>
>
> One of the PTF Reducers in Query51 is not vectorized because there's a
> reduce deduplication which combines a group-by and a windowing shuffle.
>
> {code}
> | Reducer 8 |
> | Execution mode: llap |
> | Reduce Vectorization: |
> | enabled: true |
> | enableConditionsMet:
> hive.vectorized.execution.reduce.enabled IS true, hive.execution.engine tez
> IN [tez, spark] IS true |
> | notVectorizedReason: PTF operator: Only PTF directly
> under reduce-shuffle is supported |
> | vectorized: false
> {code}
>
> It vectorizes all PTF vertices (after HIVE-20367), with {{ set
> hive.optimize.reducededuplication=false;}}
>
>
>
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