Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/14690#discussion_r77426636
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/TableFileCatalog.scala
---
@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.execution.datasources
+
+import org.apache.hadoop.fs.Path
+
+import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.catalyst.InternalRow
+import org.apache.spark.sql.catalyst.catalog.CatalogTablePartition
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.types.{StructField, StructType}
+
+
+/**
+ * A [[BasicFileCatalog]] for a metastore catalog table.
+ *
+ * @param sparkSession a [[SparkSession]]
+ * @param db the table's database name
+ * @param table the table's (unqualified) name
+ * @param partitionSchema the schema of a partitioned table's partition
columns
+ * @param sizeInBytes the table's data size in bytes
+ */
+class TableFileCatalog(
+ sparkSession: SparkSession,
+ db: String,
+ table: String,
+ partitionSchema: Option[StructType],
+ override val sizeInBytes: Long)
+ extends SessionFileCatalog(sparkSession) {
+
+ override protected val hadoopConf =
sparkSession.sessionState.newHadoopConf
+
+ private val externalCatalog = sparkSession.sharedState.externalCatalog
--- End diff --
Maybe it's ok for now, but I think it makes the dependencies more clear,
otherwise it's not obvious this class basically delegates most of its work to
`ExternalCatalog`.
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