[GitHub] [parquet-mr] clairemcginty commented on a diff in pull request #1140: allow read old parquet file which is maked by old api with old avro version which allow wrong default value in schema

["clairemcginty (via GitHub)" <gi...@apache.org>]

clairemcginty commented on code in PR #1140:
URL: https://github.com/apache/parquet-mr/pull/1140#discussion_r1331817509


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parquet-avro/src/main/java/org/apache/parquet/avro/AvroReadSupport.java:
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@@ -129,10 +129,10 @@ public RecordMaterializer<T> prepareForRead(
       avroSchema = new Schema.Parser().parse(metadata.get(AVRO_READ_SCHEMA_METADATA_KEY));
     } else if (keyValueMetaData.get(AVRO_SCHEMA_METADATA_KEY) != null) {
       // use the Avro schema from the file metadata if present
-      avroSchema = new Schema.Parser().parse(keyValueMetaData.get(AVRO_SCHEMA_METADATA_KEY));
+      avroSchema = new Schema.Parser().setValidateDefaults(false).parse(keyValueMetaData.get(AVRO_SCHEMA_METADATA_KEY));

Review Comment:
   This does seem potentially scary - maybe it would be safest to make this a Configuration option that the user can opt into?



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