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Posted to issues@impala.apache.org by "Alex Rodoni (JIRA)" <ji...@apache.org> on 2018/03/09 18:55:00 UTC

[jira] [Closed] (IMPALA-6627) Document Hive-incompatible behavior with the serialization.null.format table property

     [ https://issues.apache.org/jira/browse/IMPALA-6627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Rodoni closed IMPALA-6627.
-------------------------------

> Document Hive-incompatible behavior with the serialization.null.format table property
> -------------------------------------------------------------------------------------
>
>                 Key: IMPALA-6627
>                 URL: https://issues.apache.org/jira/browse/IMPALA-6627
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Docs
>            Reporter: Alexander Behm
>            Assignee: Alex Rodoni
>            Priority: Major
>             Fix For: Impala 2.12.0
>
>
> Impala only respects the "serialization.null.format" table property for TEXT tables and ignores it for Parquet and other formats.
> Hive respects the "serialization.null.format" property even for other formats, converting matching values to NULL during the scan.
> There's is a separate discussion to be had about which behavior makes more sense, but let's document this as an incompatibility for now since it has come up several times already.



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