[GitHub] [pinot] walterddr commented on a diff in pull request #8874: Use multi-stage DataBlock as DataTableImplV4

[GitBox <gi...@apache.org>]

walterddr commented on code in PR #8874:
URL: https://github.com/apache/pinot/pull/8874#discussion_r895029301


##########
pinot-core/src/main/java/org/apache/pinot/core/common/datatable/DataTableImplV4.java:
##########
@@ -0,0 +1,54 @@
+/**
+ * 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.pinot.core.common.datatable;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Map;
+import org.apache.pinot.common.utils.DataSchema;
+import org.apache.pinot.core.common.datablock.RowDataBlock;
+import org.apache.pinot.spi.annotations.InterfaceStability;
+
+
+/**
+ * Datatable V4 Implementation is a wrapper around the Row-based data block.
+ */
+@InterfaceStability.Evolving
+public class DataTableImplV4 extends RowDataBlock {

Review Comment:
   `RowDataBlock` is in fact a fully compatible `DataTableImplV4` with row-major storage byte buffer format. planning to reuse this going forward. 



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