Github user JDrit commented on a diff in the pull request:
https://github.com/apache/spark/pull/7802#discussion_r36113628
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/ddl.scala ---
@@ -190,21 +194,19 @@ private[sql] class DDLParser(
}
}
-private[sql] object ResolvedDataSource {
-
- private val builtinSources = Map(
- "jdbc" -> "org.apache.spark.sql.jdbc.DefaultSource",
- "json" -> "org.apache.spark.sql.json.DefaultSource",
- "parquet" -> "org.apache.spark.sql.parquet.DefaultSource",
- "orc" -> "org.apache.spark.sql.hive.orc.DefaultSource"
- )
+private[sql] object ResolvedDataSource extends Logging {
/** Given a provider name, look up the data source class definition. */
def lookupDataSource(provider: String): Class[_] = {
val loader = Utils.getContextOrSparkClassLoader
-
- if (builtinSources.contains(provider)) {
- return loader.loadClass(builtinSources(provider))
+ val sl = ServiceLoader.load(classOf[DataSourceProvider], loader)
+
+ sl.iterator().filter(_.format() == provider).toList match {
+ case Nil => logInfo(s"provider: $provider is not registered in the
service loader")
--- End diff --
Changed this to logDebug
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