Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/8909#discussion_r41455693
--- 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)
def this(sparkContext: JavaSparkContext) = this(sparkContext.sc)
/**
+ * Returns a SQLContext as new session, with separated SQL
configurations, temporary tables,
+ * registered functions, but share the same SparkContext and
CacheManager.
+ */
+ def newSession(): SQLContext = {
+ new SQLContext(sparkContext, cacheManager)
+ }
+
+ /**
* @return Spark SQL configuration
*/
- protected[sql] def conf = currentSession().conf
+ protected[sql] lazy val conf = new SQLConf
--- End diff --
`conf` will be override in HiveContext, but the constructor of SQLContext
need to access that, so it can't be `val`.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
