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https://issues.apache.org/jira/browse/HIVE-20524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt McCline reassigned HIVE-20524:
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> Schema Evolution checking is broken in 3.0 for CHAR/VARCHAR
> -----------------------------------------------------------
>
> Key: HIVE-20524
> URL: https://issues.apache.org/jira/browse/HIVE-20524
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
>
> The new org.apache.hadoop.hive.metastore.ColumnType class under hive version
> 3 hive-standalone-metadata-server method checkColTypeChangeCompatible lost a
> version 2 series bug fix that drops CHAR/VARCHAR (and DECIMAL I think) type
> decorations when checking for Schema Evolution compatibility.
> Hive1 version 2 did undecoratedTypeName(oldType) and Hive2 version performed
> the logic in TypeInfoUtils.implicitConvertible on the PrimitiveCategory not
> the raw type string.
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