[GitHub] [spark] dongjoon-hyun commented on a change in pull request #24041: [SPARK-27119][SQL] Do not infer schema when reading Hive serde table with native data source

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dongjoon-hyun commented on a change in pull request #24041: [SPARK-27119][SQL] Do not infer schema when reading Hive serde table with native data source
URL: https://github.com/apache/spark/pull/24041#discussion_r264019602
 
 

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 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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 @@ -596,7 +597,7 @@ object SQLConf {
     .stringConf
     .transform(_.toUpperCase(Locale.ROOT))
     .checkValues(HiveCaseSensitiveInferenceMode.values.map(_.toString))
-    .createWithDefault(HiveCaseSensitiveInferenceMode.INFER_AND_SAVE.toString)
+    .createWithDefault(HiveCaseSensitiveInferenceMode.NEVER_INFER.toString)
 
 Review comment:
   +1 for the comments; 1) update the config description at line 592 ~ 593 and 2) `sql-migration-guide-upgrade.md`

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