Yohahaha commented on code in PR #8560:
URL: https://github.com/apache/incubator-gluten/pull/8560#discussion_r1920935586


##########
shims/spark35/src/main/scala/org/apache/gluten/sql/shims/spark35/Spark35Shims.scala:
##########
@@ -554,7 +559,22 @@ class Spark35Shims extends SparkShims {
   override def isParquetFileEncrypted(
       fileStatus: LocatedFileStatus,
       conf: Configuration): Boolean = {
-    // TODO: Support will be added 
(https://github.com/apache/incubator-gluten/pull/8501)
-    return false
+    try {
+      val footer =
+        ParquetFileReader.readFooter(conf, fileStatus.getPath, 
ParquetMetadataConverter.NO_FILTER)
+      val fileMetaData = footer.getFileMetaData
+      fileMetaData.getEncryptionType match {
+        case EncryptionType.UNENCRYPTED =>
+          false
+        case EncryptionType.PLAINTEXT_FOOTER =>
+          true
+        case _ =>
+          false
+      }

Review Comment:
   why return file is encrypted when `EncryptionType.PLAINTEXT_FOOTER`?
   
   would you post official parquet encrypt type doc?



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