cloud-fan commented on code in PR #39942:
URL: https://github.com/apache/spark/pull/39942#discussion_r1102895359


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connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala:
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@@ -48,18 +48,16 @@ private[v2] trait V2JDBCTest extends SharedSparkSession 
with DockerIntegrationFu
 
   def notSupportsTableComment: Boolean = false
 
-  val defaultMetadata = new MetadataBuilder().putLong("scale", 0).build()

Review Comment:
   with the new `Column` abstraction, jdbc tables no longer need to expose the 
internal special field metadata, which is only used by `JDBCRDD`.



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