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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-20296) UnsupportedOperationChecker text on distinct aggregations differs from docs
Date Tue, 11 Apr 2017 17:15:41 GMT

     [ https://issues.apache.org/jira/browse/SPARK-20296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen updated SPARK-20296:
------------------------------
    Priority: Trivial  (was: Minor)

Sounds fine, you can submit a PR to make the messages consistent.

> UnsupportedOperationChecker text on distinct aggregations differs from docs
> ---------------------------------------------------------------------------
>
>                 Key: SPARK-20296
>                 URL: https://issues.apache.org/jira/browse/SPARK-20296
>             Project: Spark
>          Issue Type: Documentation
>          Components: Structured Streaming
>    Affects Versions: 2.1.0
>            Reporter: Jason Tokayer
>            Priority: Trivial
>
> In the unsupported operations section in the docs https://spark.apache.org/docs/latest/structured-streaming-programming-guide.html
it states that "Distinct operations on streaming Datasets are not supported.". However, in
```org.apache.spark.sql.catalyst.analysis.UnsupportedOperationChecker.scala```, the error
message is ```Distinct aggregations are not supported on streaming DataFrames/Datasets, unless
it is on aggregated DataFrame/Dataset in Complete output mode. Consider using approximate
distinct aggregation```.
> It seems that the error message is incorrect.



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