Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/16135#discussion_r91828385
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala ---
@@ -53,6 +56,18 @@ private[hive] class HiveMetastoreCatalog(sparkSession:
SparkSession) extends Log
tableIdent.table.toLowerCase)
}
+ /** ReadWriteLock for each tables, protect the read and write cached */
--- End diff --
Could you update this comment to say that the reason we lock is to prevent
concurrent table instantiation?
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