Andras Istvan Nagy updated KYLIN-4191:
    Attachment: NPE.txt

> NPE in StreamingTupleConverter when querying count on a dimension field
> -----------------------------------------------------------------------
>                 Key: KYLIN-4191
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4191
>             Project: Kylin
>          Issue Type: Bug
>          Components: Real-time Streaming
>    Affects Versions: v3.0.0-alpha
>            Reporter: Andras Istvan Nagy
>            Priority: Major
>         Attachments: NPE.txt
> I am using the real-time olap feature with a lambda datasource definition. 
> When executing a query that has a count(dim_field) in the select clause, 
> where "dim_field" is one of the dimension fields, I get a NPE from 
> org.apache.kylin.stream.core.query.StreamingTupleConverter.
> (According to a colleague, a similar query used to work for some time in our 
> environment, and then stopped working, but I can't verify this statement. 
> Restarting the Kylin processes or disabling/enabling the cube does not "fix" 
> the issue.)
> Please see stacktrace below.

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