Herman van Hovell created SPARK-22637:
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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.
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