Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20201#discussion_r163010889
--- Diff:
sql/core/src/test/java/test/org/apache/spark/sql/sources/v2/JavaPartitionAwareDataSource.java
---
@@ -0,0 +1,110 @@
+/*
+ * 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 test.org.apache.spark.sql.sources.v2;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
+
+import org.apache.spark.sql.Row;
+import org.apache.spark.sql.catalyst.expressions.GenericRow;
+import org.apache.spark.sql.sources.v2.DataSourceV2;
+import org.apache.spark.sql.sources.v2.DataSourceV2Options;
+import org.apache.spark.sql.sources.v2.ReadSupport;
+import org.apache.spark.sql.sources.v2.reader.*;
+import org.apache.spark.sql.types.StructType;
+
+public class JavaPartitionAwareDataSource implements DataSourceV2,
ReadSupport {
+
+ class Reader implements DataSourceV2Reader, SupportsReportPartitioning {
+ private final StructType schema = new StructType().add("a",
"int").add("b", "int");
+
+ @Override
+ public StructType readSchema() {
+ return schema;
+ }
+
+ @Override
+ public List<ReadTask<Row>> createReadTasks() {
+ return java.util.Arrays.asList(
+ new SpecificReadTask(new int[]{1, 1, 3}, new int[]{4, 4, 6}),
+ new SpecificReadTask(new int[]{2, 4, 4}, new int[]{6, 2, 2}));
+ }
+
+ @Override
+ public Partitioning outputPartitioning() {
+ return new MyPartitioning();
+ }
+ }
+
+ static class MyPartitioning implements Partitioning {
+
+ @Override
+ public int numPartitions() {
+ return 2;
+ }
+
+ @Override
+ public boolean satisfy(Distribution d) {
--- End diff --
ditto
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
