[GitHub] [druid] JulianJaffePinterest commented on pull request #10920: Spark Direct Readers and Writers for Druid.

[GitBox <gi...@apache.org>]

JulianJaffePinterest commented on pull request #10920:
URL: https://github.com/apache/druid/pull/10920#issuecomment-843974756


   @birTiwana the problem is that you don't have the `org.apache.spark.sql.sources.DataSourceRegister` resource in your META-INF/services, so the short name resolution isn't working. How are you building the jar?
   
   If you're using `mvn clean package -pl extensions-core/spark-extensions`, try deleting the line in the pom that sets the ServicesResourcesTransformer (`<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>` ). If you don't want to include the resource in your META-INF services, you can also just use the fully qualified name instead: `org.apache.druid.spark.v2.DruidDataSourceV2`


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