[SPARK-19495][SQL] Make SQLConf slightly more extensible

## What changes were proposed in this pull request?
This pull request makes SQLConf slightly more extensible by removing the visibility limitations on the build* functions.

## How was this patch tested?
N/A - there are no logic changes and everything should be covered by existing unit tests.

Author: Reynold Xin <rxin@databricks.com>

Closes #16835 from rxin/SPARK-19495.

1 files changed, 9 insertions, 9 deletions

diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala
index 2822a55e3d..30abc62803 100644
--- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala
+++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala
@@ -69,18 +69,18 @@ private[spark] object HiveUtils extends Logging {
    */
   val hiveTypeString: String = "HIVE_TYPE_STRING"
 
-  val HIVE_METASTORE_VERSION = SQLConfigBuilder("spark.sql.hive.metastore.version")
+  val HIVE_METASTORE_VERSION = buildConf("spark.sql.hive.metastore.version")
     .doc("Version of the Hive metastore. Available options are " +
         s"<code>0.12.0</code> through <code>$hiveExecutionVersion</code>.")
     .stringConf
     .createWithDefault(hiveExecutionVersion)
 
-  val HIVE_EXECUTION_VERSION = SQLConfigBuilder("spark.sql.hive.version")
+  val HIVE_EXECUTION_VERSION = buildConf("spark.sql.hive.version")
     .doc("Version of Hive used internally by Spark SQL.")
     .stringConf
     .createWithDefault(hiveExecutionVersion)
 
-  val HIVE_METASTORE_JARS = SQLConfigBuilder("spark.sql.hive.metastore.jars")
+  val HIVE_METASTORE_JARS = buildConf("spark.sql.hive.metastore.jars")
     .doc(s"""
       | Location of the jars that should be used to instantiate the HiveMetastoreClient.
       | This property can be one of three options: "
@@ -96,28 +96,28 @@ private[spark] object HiveUtils extends Logging {
     .stringConf
     .createWithDefault("builtin")
 
-  val CONVERT_METASTORE_PARQUET = SQLConfigBuilder("spark.sql.hive.convertMetastoreParquet")
+  val CONVERT_METASTORE_PARQUET = buildConf("spark.sql.hive.convertMetastoreParquet")
     .doc("When set to false, Spark SQL will use the Hive SerDe for parquet tables instead of " +
       "the built in support.")
     .booleanConf
     .createWithDefault(true)
 
   val CONVERT_METASTORE_PARQUET_WITH_SCHEMA_MERGING =
-    SQLConfigBuilder("spark.sql.hive.convertMetastoreParquet.mergeSchema")
+    buildConf("spark.sql.hive.convertMetastoreParquet.mergeSchema")
       .doc("When true, also tries to merge possibly different but compatible Parquet schemas in " +
         "different Parquet data files. This configuration is only effective " +
         "when \"spark.sql.hive.convertMetastoreParquet\" is true.")
       .booleanConf
       .createWithDefault(false)
 
-  val CONVERT_METASTORE_ORC = SQLConfigBuilder("spark.sql.hive.convertMetastoreOrc")
+  val CONVERT_METASTORE_ORC = buildConf("spark.sql.hive.convertMetastoreOrc")
     .internal()
     .doc("When set to false, Spark SQL will use the Hive SerDe for ORC tables instead of " +
       "the built in support.")
     .booleanConf
     .createWithDefault(false)
 
-  val HIVE_METASTORE_SHARED_PREFIXES = SQLConfigBuilder("spark.sql.hive.metastore.sharedPrefixes")
+  val HIVE_METASTORE_SHARED_PREFIXES = buildConf("spark.sql.hive.metastore.sharedPrefixes")
     .doc("A comma separated list of class prefixes that should be loaded using the classloader " +
       "that is shared between Spark SQL and a specific version of Hive. An example of classes " +
       "that should be shared is JDBC drivers that are needed to talk to the metastore. Other " +
@@ -130,7 +130,7 @@ private[spark] object HiveUtils extends Logging {
   private def jdbcPrefixes = Seq(
     "com.mysql.jdbc", "org.postgresql", "com.microsoft.sqlserver", "oracle.jdbc")
 
-  val HIVE_METASTORE_BARRIER_PREFIXES = SQLConfigBuilder("spark.sql.hive.metastore.barrierPrefixes")
+  val HIVE_METASTORE_BARRIER_PREFIXES = buildConf("spark.sql.hive.metastore.barrierPrefixes")
     .doc("A comma separated list of class prefixes that should explicitly be reloaded for each " +
       "version of Hive that Spark SQL is communicating with. For example, Hive UDFs that are " +
       "declared in a prefix that typically would be shared (i.e. <code>org.apache.spark.*</code>).")
@@ -138,7 +138,7 @@ private[spark] object HiveUtils extends Logging {
     .toSequence
     .createWithDefault(Nil)
 
-  val HIVE_THRIFT_SERVER_ASYNC = SQLConfigBuilder("spark.sql.hive.thriftServer.async")
+  val HIVE_THRIFT_SERVER_ASYNC = buildConf("spark.sql.hive.thriftServer.async")
     .doc("When set to true, Hive Thrift server executes SQL queries in an asynchronous way.")
     .booleanConf
     .createWithDefault(true)