You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Herman van Hovell (JIRA)" <ji...@apache.org> on 2017/11/28 21:06:01 UTC

[jira] [Created] (SPARK-22637) CatalogImpl.refresh() has quadratic complexity for a view

Herman van Hovell created SPARK-22637:
-----------------------------------------

             Summary: CatalogImpl.refresh() has quadratic complexity for a view
                 Key: SPARK-22637
                 URL: https://issues.apache.org/jira/browse/SPARK-22637
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.2.0
            Reporter: Herman van Hovell
            Priority: Minor


{{org.apache.spark.sql.internal.refreshTable}} uses {{foreach(..)}} to refresh all tables in a view. This traverses all nodes in the subtree and calls {{LogicalPlan.refresh()}} on these nodes. However {{LogicalPlan.refresh()}} is also refreshing its children, as a result refreshing a large view can be quite expensive.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org