snuyanzin commented on code in PR #21410:
URL: https://github.com/apache/flink/pull/21410#discussion_r1047216223
##########
flink-state-backends/flink-statebackend-changelog/src/test/java/org/apache/flink/state/changelog/ChangelogDelegateMemoryStateBackendTest.java:
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@@ -35,20 +35,20 @@
import org.apache.flink.runtime.state.memory.MemoryStateBackend;
import org.apache.flink.runtime.state.storage.JobManagerCheckpointStorage;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.io.TempDir;
+import java.io.File;
import java.io.IOException;
/** Tests for {@link ChangelogStateBackend} delegating {@link
MemoryStateBackend}. */
public class ChangelogDelegateMemoryStateBackendTest extends
MemoryStateBackendTest {
Review Comment:
```suggestion
class ChangelogDelegateMemoryStateBackendTest extends MemoryStateBackendTest
{
```
could be package private
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