[GitHub] [kyuubi] zhouyifan279 commented on a diff in pull request #4903: [AUTHZ] Fix NoSuchElementException when listing database in CatalogImpl in Spark 3.4

["zhouyifan279 (via GitHub)" <gi...@apache.org>]

zhouyifan279 commented on code in PR #4903:
URL: https://github.com/apache/kyuubi/pull/4903#discussion_r1211010634


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extensions/spark/kyuubi-spark-authz/src/main/scala/org/apache/kyuubi/plugin/spark/authz/ranger/FilterDataSourceV2Strategy.scala:
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@@ -17,13 +17,18 @@
 package org.apache.kyuubi.plugin.spark.authz.ranger
 
 import org.apache.spark.sql.{SparkSession, Strategy}
-import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, Project}
 import org.apache.spark.sql.execution.SparkPlan
 
 import org.apache.kyuubi.plugin.spark.authz.util.ObjectFilterPlaceHolder
 
 class FilterDataSourceV2Strategy(spark: SparkSession) extends Strategy {
   override def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match {
+    // Before Spark 3.2, `ColumnPruning` rule will set `ObjectFilterPlaceHolder#child` to `Project`
+    case ObjectFilterPlaceHolder(Project(_, child)) if child.nodeName == "ShowNamespaces" =>
+      spark.sessionState.planner.plan(child)
+        .map(FilteredShowNamespaceExec(_, spark.sparkContext)).toSeq
+

Review Comment:
   Revised



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