From 8237cdfd2277bf5ed4d95229a28b30493001f8a6 Mon Sep 17 00:00:00 2001
From: Bryan Keller <bryanck@gmail.com>
Date: Tue, 18 Feb 2025 23:59:52 -0800
Subject: [PATCH] Parquet: Fix performance regression in reader init (#12305)

---
 .../src/main/java/org/apache/iceberg/parquet/Parquet.java  | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/parquet/src/main/java/org/apache/iceberg/parquet/Parquet.java b/parquet/src/main/java/org/apache/iceberg/parquet/Parquet.java
index 310435209bac..2c37a52449e5 100644
--- a/parquet/src/main/java/org/apache/iceberg/parquet/Parquet.java
+++ b/parquet/src/main/java/org/apache/iceberg/parquet/Parquet.java
@@ -106,6 +106,7 @@
 import org.apache.parquet.avro.AvroWriteSupport;
 import org.apache.parquet.column.ParquetProperties;
 import org.apache.parquet.column.ParquetProperties.WriterVersion;
+import org.apache.parquet.conf.PlainParquetConfiguration;
 import org.apache.parquet.crypto.FileDecryptionProperties;
 import org.apache.parquet.crypto.FileEncryptionProperties;
 import org.apache.parquet.hadoop.ParquetFileReader;
@@ -1206,7 +1207,7 @@ public <D> CloseableIterable<D> build() {
           }
           optionsBuilder = HadoopReadOptions.builder(conf);
         } else {
-          optionsBuilder = ParquetReadOptions.builder();
+          optionsBuilder = ParquetReadOptions.builder(new PlainParquetConfiguration());
         }
 
         for (Map.Entry<String, String> entry : properties.entrySet()) {
@@ -1275,7 +1276,9 @@ public <D> CloseableIterable<D> build() {
         // TODO: should not need to get the schema to push down before opening the file.
         // Parquet should allow setting a filter inside its read support
         ParquetReadOptions decryptOptions =
-            ParquetReadOptions.builder().withDecryption(fileDecryptionProperties).build();
+            ParquetReadOptions.builder(new PlainParquetConfiguration())
+                .withDecryption(fileDecryptionProperties)
+                .build();
         MessageType type;
         try (ParquetFileReader schemaReader =
             ParquetFileReader.open(ParquetIO.file(file), decryptOptions)) {