Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19888#discussion_r154852162
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala ---
@@ -206,7 +206,8 @@ case class DropTableCommand(
try {
sparkSession.sharedState.cacheManager.uncacheQuery(sparkSession.table(tableName))
} catch {
- case _: NoSuchTableException if ifExists =>
+ case ae: AnalysisException
+ if ifExists && ae.cause.nonEmpty &&
ae.getCause.isInstanceOf[NoSuchTableException] =>
--- End diff --
```
scala> spark.version
res2: String = 2.3.0-SNAPSHOT
scala> sql("DROP TABLE IF EXISTS t")
res3: org.apache.spark.sql.DataFrame = []
scala> sql("DROP TABLE IF EXISTS t")
res4: org.apache.spark.sql.DataFrame = []
```
Unable to reproduce it.
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