gaborgsomogyi commented on a change in pull request #28368:
URL: https://github.com/apache/spark/pull/28368#discussion_r415916202
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/connection/DB2ConnectionProvider.scala
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@@ -48,7 +48,7 @@ private[sql] class DB2ConnectionProvider(driver: Driver,
options: JDBCOptions)
result
}
- override def setAuthenticationConfigIfNeeded(): Unit = {
+ override def setAuthenticationConfigIfNeeded(): Unit =
SecurityConfigurationLock.synchronized {
Review comment:
This behaviour is enforced by tests for each database which adds
something to the security config. For instance postgres test can be found
[here](https://github.com/apache/spark/blob/7735db2a273edf208ae50e88926c9f7a77e5dbac/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/jdbc/connection/PostgresConnectionProviderSuite.scala#L20).
The following code part represent the details:
https://github.com/apache/spark/blob/7735db2a273edf208ae50e88926c9f7a77e5dbac/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/jdbc/connection/ConnectionProviderSuiteBase.scala#L65-L67
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