cloud-fan commented on a change in pull request #32753:
URL: https://github.com/apache/spark/pull/32753#discussion_r655580221
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File path:
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedRleValuesReader.java
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@@ -170,77 +170,135 @@ public int readInteger() {
* }
*/
public void readBatch(
Review comment:
I need more context to review this PR
1. where do we read the column index in `VectorizedColumnReader`?
2. where do we leverage the index to skip pages? In
`VectorizedRleValuesReader`?
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File path:
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/ParquetReadState.java
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@@ -0,0 +1,156 @@
+/*
+ * 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.parquet;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.PrimitiveIterator;
+
+/**
+ * Helper class to store intermediate state while reading a Parquet column
chunk.
+ */
+final class ParquetReadState {
Review comment:
If possible can we do this refactor first before adding column index
support?
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