cloud-fan commented on a change in pull request #26589: [SPARK-29947][SQL]
Improve ResolveRelations performance
URL: https://github.com/apache/spark/pull/26589#discussion_r362699345
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -858,7 +861,12 @@ class Analyzer(
}
case u: UnresolvedRelation =>
- lookupRelation(u.multipartIdentifier).map(resolveViews).getOrElse(u)
+ val relationCache = AnalysisContext.get.relationCache
+ relationCache.getOrElse(u.tableName, {
Review comment:
shall we apply the cache in `lookupRelation` where we expand the name and
get the qualified table name?
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