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Posted to issues@hive.apache.org by "slim bouguerra (JIRA)" <ji...@apache.org> on 2018/05/18 23:05:00 UTC

[jira] [Assigned] (HIVE-19615) Proper handling of is null and not is null predicate when pushed to Druid

     [ https://issues.apache.org/jira/browse/HIVE-19615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

slim bouguerra reassigned HIVE-19615:
-------------------------------------


> Proper handling of is null and not is null predicate when pushed to Druid
> -------------------------------------------------------------------------
>
>                 Key: HIVE-19615
>                 URL: https://issues.apache.org/jira/browse/HIVE-19615
>             Project: Hive
>          Issue Type: Bug
>            Reporter: slim bouguerra
>            Assignee: slim bouguerra
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Recent development in Druid introduced new semantic of null handling [here|https://github.com/b-slim/druid/commit/219e77aeac9b07dc20dd9ab2dd537f3f17498346]
> Based on those changes when need to honer push down of expressions with is null/ is not null predicates.
> The prosed fix overrides the mapping of Calcite Function to Druid Expression to much the correct semantic.



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