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https://issues.apache.org/jira/browse/CARBONDATA-2918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16604297#comment-16604297
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Ajantha Bhat commented on CARBONDATA-2918:
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https://github.com/apache/carbondata/pull/2692
> NPE If SDK sort column is not same case as schema
> -------------------------------------------------
>
> Key: CARBONDATA-2918
> URL: https://issues.apache.org/jira/browse/CARBONDATA-2918
> Project: CarbonData
> Issue Type: Bug
> Reporter: Ajantha Bhat
> Assignee: Ajantha Bhat
> Priority: Major
>
> problem:
> Currently in CarbonWriterBuilder,
> sortColumnsList.indexOf(field.getFieldName()) return null due to case issue.
> so, one of the sortcolumns in array will be null. so one of the column schema
> becomes null,
> hence when column schema is accessed, we get NPE
> solution: Make sort columns as case insensitive..
> Change pareant column (as sort column is supported only foro parent columns)
> name to lower case when schema received by the user
> and change sort columns also to lower case when received by the user.
>
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