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https://issues.apache.org/jira/browse/HIVE-28684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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FangBO updated HIVE-28684:
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Description:
We have a table which partition number is about 300,000. When we add column for
the table without cascade, the ddl operation will increase the pressure of the
metadata database.
HIVE-18138 will update all historical partition's properties. Actually, if we
add new columns and cascade=false, there is no need to update historical
partition's properties.
was:
We have a table which partition number is about 300,000. When we add column for
the table without cascade, the ddl operation will increase the pressure of the
metadata database.
We find HIVE-18138 will update all historical partition's properties. Actually,
if we add new columns and cascade=false, there is no need to update historical
partition's properties.
> There is no need to modify the properties of historical partitions when
> adding new fields and cascade=false
> -----------------------------------------------------------------------------------------------------------
>
> Key: HIVE-28684
> URL: https://issues.apache.org/jira/browse/HIVE-28684
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: FangBO
> Priority: Minor
>
> We have a table which partition number is about 300,000. When we add column
> for the table without cascade, the ddl operation will increase the pressure
> of the metadata database.
>
> HIVE-18138 will update all historical partition's properties. Actually, if we
> add new columns and cascade=false, there is no need to update historical
> partition's properties.
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