dszakallas commented on issue #1751: URL: https://github.com/apache/hudi/issues/1751#issuecomment-819901171
I am getting the same `java.lang.NoClassDefFoundError: org/apache/calcite/rel/type/RelDataTypeSystem` when trying to use Hive sync. It looks like Spark 3 is using a custom class loading mechanism for loading Hive: .https://github.com/apache/spark/blob/ab93729987084ec55f762639a7e7f7cb8dd275e1/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala#L170 I think this might cause some classes to be loaded only if they are coming from one of the exec jars, which I assume are the jars shipped with Spark. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
