diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/DriverRegistry.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/DriverRegistry.scala index 7a6c0f9fed2f9..1723596de1db2 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/DriverRegistry.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/DriverRegistry.scala @@ -32,6 +32,13 @@ import org.apache.spark.util.Utils */ object DriverRegistry extends Logging { + /** + * Load DriverManager first to avoid any race condition between + * DriverManager static initialization block and specific driver class's + * static initialization block. e.g. PhoenixDriver + */ + DriverManager.getDrivers + private val wrapperMap: mutable.Map[String, DriverWrapper] = mutable.Map.empty def register(className: String): Unit = {