[
https://issues.apache.org/jira/browse/SPARK-53623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dongjoon Hyun updated SPARK-53623:
----------------------------------
Parent: SPARK-51166
Issue Type: Sub-task (was: Improvement)
> O(N^2) operation in readLargeTableProp in CatalogColumnStat
> -----------------------------------------------------------
>
> Key: SPARK-53623
> URL: https://issues.apache.org/jira/browse/SPARK-53623
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Yesheng Ma
> Assignee: Yesheng Ma
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0
>
>
> The CatalogColumnStat.readLargeTableProp
> [https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala#L766-L784]
> is an O(N) operation. Considering a table can have a lot of table
> properties, this effectively becomes an O(N^2) operation, which can be very
> slow for tables with a lot of table properties.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
