snuyanzin commented on code in PR #21410:
URL: https://github.com/apache/flink/pull/21410#discussion_r1043363450
##########
flink-runtime/src/test/java/org/apache/flink/runtime/state/StateBackendMigrationTestBase.java:
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@@ -98,14 +100,14 @@ protected boolean supportsKeySerializerCheck() {
return true;
}
- @Rule public final TemporaryFolder tempFolder = new TemporaryFolder();
+ @TempDir public static File tempFolder;
Review Comment:
```suggestion
@TempDir protected static File tempFolder;
```
isn't protected enough here?
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