Github user adrian-wang commented on a diff in the pull request:
https://github.com/apache/spark/pull/6636#discussion_r31702662
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala ---
@@ -679,7 +679,25 @@ class SQLContext(@transient val sparkContext:
SparkContext)
* @since 1.3.0
*/
def dropTempTable(tableName: String): Unit = {
- cacheManager.tryUncacheQuery(table(tableName))
+ dropTempTable(tableName, ifExists = false)
+ }
+
+ /**
+ * Drops the temporary table with the given table name in the catalog.
If the table has been
+ * cached/persisted before, it's also unpersisted.
+ *
+ * @param tableName the name of the table to be unregistered.
+ * @param ifExists whether ignore non-existent table
+ *
+ * @group basic
+ * @since 1.5.0
+ */
+ def dropTempTable(tableName: String, ifExists: Boolean): Unit = {
--- End diff --
If using Try, we have to look into the return to check the reason. Not only
non-existent table leads to failure of drop operation. This would only ignore
the certain case.
I'll close it if not necessary.
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