cxzl25 commented on code in PR #5128:
URL: https://github.com/apache/kyuubi/pull/5128#discussion_r1282612935
##########
externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/util/SparkCatalogUtils.scala:
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@@ -137,7 +137,7 @@ object SparkCatalogUtils extends Logging {
listAllNamespaces(catalog).filter { ns =>
val quoted = ns.map(quoteIfNeeded).mkString(".")
schemaPattern.r.pattern.matcher(quoted).matches()
- }.distinct
+ }.map(_.toList).toList.distinct.map(_.toArray).toArray
Review Comment:
```scala
scala> Array(Array("default"),Array("default")).distinct
res0: Array[Array[String]] = Array(Array(default), Array(default))
```
```scala
scala>
Array(Array("default"),Array("default")).map(_.toList).toList.distinct.map(_.toArray).toArray
res1: Array[Array[String]] = Array(Array(default))
```
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