Github user oliviertoupin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7049#discussion_r33397558
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/parquet/newParquet.scala ---
@@ -361,13 +355,15 @@ private[sql] class ParquetRelation2(
rawFooters.map(footer => footer.getFile -> footer).toMap
}
+ footers = new RelationMemo(getFooters())
+
// If we already get the schema, don't need to re-compute it since
the schema merging is
// time-consuming.
if (dataSchema == null) {
dataSchema = {
val dataSchema0 = maybeDataSchema
- .orElse(readSchema())
--- End diff --
In Metastore we trust. If the Metastore schema is available we bypass
reading the footers.
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