Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/8909#discussion_r41424399
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala ---
@@ -64,18 +63,28 @@ import org.apache.spark.util.Utils
*
* @since 1.0.0
*/
-class SQLContext(@transient val sparkContext: SparkContext)
- extends org.apache.spark.Logging
- with Serializable {
+class SQLContext private[sql](
+ @transient val sparkContext: SparkContext,
+ @transient protected[sql] val cacheManager: CacheManager)
+ extends org.apache.spark.Logging with Serializable {
self =>
+ def this(sparkContext: SparkContext) = this(sparkContext, new
CacheManager)
--- End diff --
Let's add scaladoc to explain when it is recommended to use this
constructor and when it recommended to use `newSession`.
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