Github user SaintBacchus commented on a diff in the pull request:
https://github.com/apache/spark/pull/14534#discussion_r74028969
--- Diff:
sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/server/SparkSQLOperationManager.scala
---
@@ -39,15 +38,19 @@ private[thriftserver] class SparkSQLOperationManager()
val handleToOperation = ReflectionUtils
.getSuperField[JMap[OperationHandle, Operation]](this,
"handleToOperation")
- val sessionToActivePool = Map[SessionHandle, String]()
- val sessionToContexts = Map[SessionHandle, SQLContext]()
+ val sessionToActivePool = new ConcurrentHashMap[SessionHandle, String]()
--- End diff --
`sessionToActivePool` and `sessionToContext` will be used in
`SparkSQLSessionManager` at `openSession` and `closeSession` methond. To make
this field as private, it must add new funciton here.
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