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Commit e430915f authored by Tathagata Das's avatar Tathagata Das
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[SPARK-18870] Disallowed Distinct Aggregations on Streaming Datasets 


## What changes were proposed in this pull request?

Check whether Aggregation operators on a streaming subplan have aggregate expressions with isDistinct = true.

## How was this patch tested?

Added unit test

Author: Tathagata Das <tathagata.das1565@gmail.com>

Closes #16289 from tdas/SPARK-18870.

(cherry picked from commit 4f7292c8)
Signed-off-by: default avatarTathagata Das <tathagata.das1565@gmail.com>
parent 2a8de2e1
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