[GitHub] [drill] dzamo commented on a change in pull request #2338: DRILL-1282 Move parquet to use v2 format as default

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dzamo commented on a change in pull request #2338:
URL: https://github.com/apache/drill/pull/2338#discussion_r733575308



##########
File path: exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/DataPageHeaderInfoProvider.java
##########
@@ -0,0 +1,107 @@
+/*
+ * 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.drill.exec.store.parquet;
+
+import org.apache.drill.common.exceptions.DrillRuntimeException;
+import org.apache.parquet.format.DataPageHeaderV2;
+import org.apache.parquet.format.Encoding;
+import org.apache.parquet.format.PageHeader;
+import org.apache.parquet.format.Statistics;
+
+public interface DataPageHeaderInfoProvider {
+  int getNumValues();
+
+  Encoding getEncoding();
+
+  Encoding getDefinitionLevelEncoding();

Review comment:
       @vvysotskyi these two methods were already in the interface, I didn't add them.  But I agree that, unfortunately, they are not helpful because v2 rep and def level decoding requires special treatment anyway.  So should I remove them from the interface?




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