Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14757#discussion_r75800677
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalogSuite.scala
---
@@ -40,6 +40,15 @@ abstract class ExternalCatalogSuite extends
SparkFunSuite with BeforeAndAfterEac
protected def resetState(): Unit = { }
+ // Clear all state before each test
+ override def beforeEach(): Unit = {
+ try {
+ resetState()
--- End diff --
https://github.com/apache/spark/blob/7bb64aae27f670531699f59d3f410e38866609b7/sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveExternalCatalogSuite.scala#L31-L35
Before this PR, we create a metastore at a temp location to avoid any
potential conflict of having multiple connections to a single derby instance.
This does not sound an issue now. Is my understanding right?
If we do not create a new metastore, we have to clean the existing
metastore; otherwise, [the
checking](https://github.com/apache/spark/blob/5effc016c893ce917d535cc1b5026d8e4c846721/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalogSuite.scala#L60-L61)
in the test case could fail.
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