dongjoon-hyun commented on a change in pull request #28137: [SPARK-31361][SQL]
Rebase datetime in parquet/avro according to file written Spark version
URL: https://github.com/apache/spark/pull/28137#discussion_r404287181
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceUtils.scala
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@@ -64,4 +66,10 @@ object DataSourceUtils {
private[sql] def isDataFile(fileName: String) =
!(fileName.startsWith("_") || fileName.startsWith("."))
+
+ def needRebaseDateTime(lookupFileMeta: String => String): Option[Boolean] = {
+ // If there is no version, we return None and let the caller side to
decide.
+ // Files written by Spark 3.0 and later follow the new calendar and don't
need to rebase.
+ Option(lookupFileMeta(SPARK_VERSION_METADATA_KEY)).map(_ < "3.0")
Review comment:
Thank you so much, @cloud-fan . This is much better solution.
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