Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21696#discussion_r199678338
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFileFormat.scala
---
@@ -379,14 +366,29 @@ class ParquetFileFormat
null)
val sharedConf = broadcastedHadoopConf.value.value
+
+ val fileMetaData =
+ ParquetFileReader.readFooter(sharedConf, fileSplit.getPath,
SKIP_ROW_GROUPS).getFileMetaData
--- End diff --
will we read footer again in the parquet reader?
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