Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14962#discussion_r77761938
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/TempViewManager.scala
---
@@ -0,0 +1,92 @@
+/*
+ * 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.catalyst.catalog
+
+import javax.annotation.concurrent.GuardedBy
+
+import scala.collection.mutable
+
+import org.apache.spark.sql.AnalysisException
+import
org.apache.spark.sql.catalyst.analysis.TempViewAlreadyExistsException
+import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.catalyst.util.StringUtils
+
+
+/**
+ * A thread-safe manager for a list of temp views, providing atomic
operations to manage temp views.
--- End diff --
In the description of `TempViewManager`, could we mention the name of temp
view is always case sensitive? The caller is responsible for handling
case-related issues.
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