beliefer edited a comment on issue #23479: [SPARK-26556][SQL]Add custom provider for thrid party connector URL: https://github.com/apache/spark/pull/23479#issuecomment-451874182 > What do you mean? thrid party datasources can implement `shortName` as well, for instance, here https://github.com/databricks/spark-xml/blob/a0a8b15d940bdc91eb7d6d24e8fdc60baf33a2a5/src/main/scala/com/databricks/spark/xml/DefaultSource.scala#L38 > > See also https://github.com/databricks/spark-xml/blob/a0a8b15d940bdc91eb7d6d24e8fdc60baf33a2a5/src/main/resources/META-INF/services/org.apache.spark.sql.sources.DataSourceRegister Thanks,I know it.Because some thrid party data sources not define the `META-INF/services/org.apache.spark.sql.sources.DataSourceRegister`. See https://github.com/mongodb/mongo-spark
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