cloud-fan commented on a change in pull request #28938:
URL: https://github.com/apache/spark/pull/28938#discussion_r509927098
##########
File path:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala
##########
@@ -78,6 +80,9 @@ private[spark] class HiveExternalCatalog(conf: SparkConf,
hadoopConf: Configurat
classOf[TException].getCanonicalName,
classOf[InvocationTargetException].getCanonicalName)
+ // Locks used to synchronized read or write operations per database
+ private val clientLocks = new ConcurrentHashMap[String, ReadWriteLock]()
Review comment:
Can we use a fixed number of lock objects? e.g. `hash(db_name) %
num_lock_objs`
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
