Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/11891#discussion_r57183266
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala ---
@@ -439,6 +440,56 @@ private[hive] class HiveMetastoreCatalog(val client:
HiveClient, hive: HiveConte
}
}
+ private def getCached(
+ tableIdentifier: QualifiedTableName,
+ metastoreRelation: MetastoreRelation,
+ schemaInMetastore: StructType,
+ expectedFileFormat: Class[_ <: FileFormat],
+ partitionSpecInMetastore: Option[PartitionSpec]):
Option[LogicalRelation] = {
+
+ cachedDataSourceTables.getIfPresent(tableIdentifier) match {
+ case null => None // Cache miss
+ case logical @ LogicalRelation(relation: HadoopFsRelation, _, _) =>
+ val pathsInMetastore =
metastoreRelation.table.storage.locationUri.toSeq
+ val cachedRelationFileFormatClass = relation.fileFormat.getClass
+
+ expectedFileFormat match {
+ case `cachedRelationFileFormatClass` =>
+ // If we have the same paths, same schema, and same partition
spec,
+ // we will use the cached relation.
--- End diff --
And bucketing spec?
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