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https://issues.apache.org/jira/browse/IMPALA-6627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Rodoni closed IMPALA-6627.
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> 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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