Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18544#discussion_r201157527
--- Diff:
sql/hive/src/test/java/org/apache/spark/sql/hive/execution/UDAFEmpty.java ---
@@ -0,0 +1,32 @@
+/*
+ * 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.hive.execution;
+
+import org.apache.hadoop.hive.ql.parse.SemanticException;
+import org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDAFResolver;
+import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
+import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
+
+/**
+ * An empty UDAF that throws a semantic exception
+ */
+public class UDAFEmpty extends AbstractGenericUDAFResolver {
+ @Override
+ public GenericUDAFEvaluator getEvaluator(TypeInfo[] info) throws
SemanticException {
+ throw new SemanticException("Can not get a evaluator of the empty
UDAF");
--- End diff --
Nit: `a evaluator` -> `an evaluator`
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
