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https://issues.apache.org/jira/browse/HIVE-15804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852279#comment-15852279
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Ashutosh Chauhan commented on HIVE-15804:
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TestDruidSerDe failure looks related. Seems like we need to update logic in
DruidSerde as well.
> Druid handler might not emit metadata query when CBO fails
> ----------------------------------------------------------
>
> Key: HIVE-15804
> URL: https://issues.apache.org/jira/browse/HIVE-15804
> Project: Hive
> Issue Type: Bug
> Components: Druid integration
> Affects Versions: 2.2.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-15804.patch
>
>
> When CBO is not enabled/fails, we should still be able to run queries on
> Druid datasources.
> This is implemented as Select query that will retrieve all data available
> from Druid and then execute the rest of the logic on the data. However,
> currently we might fail due to wrong inferred type for the Druid datasource
> columns for numerical types.
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