HBASE-29968 Upgrade hbase-mapreduce to use junit5 by liuxiaocs7 · Pull Request #7861 · apache/hbase

liuxiaocs7 · 2026-03-05T17:38:38Z

see: HBASE-29968

liuxiaocs7 · 2026-03-09T09:58:27Z

liuxiaocs7 · 2026-03-16T12:05:49Z

liuxiaocs7 · 2026-03-19T14:42:12Z

TestVerifyReplicationAdjunct fails

java.io.IOException: Cluster already running

liuxiaocs7 · 2026-03-24T08:49:45Z

hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationBase.java

    htable2 = connection2.getTable(tableName);
  }

+  @BeforeAll


add this for TestVerifyReplicationAdjunct, will remove in hbase-server upgrading!

liuxiaocs7 · 2026-03-24T08:51:46Z

...apreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationAdjunct.java

  public static void setUpBeforeClass() throws Exception {
-    TestReplicationBase.setUpBeforeClass();


Will be invoked in parent class TestReplicationBase automatically, will refactor this in hbase-server

Copilot

Pull request overview

Migrates the hbase-mapreduce module’s test suite from JUnit 4 to JUnit Jupiter (JUnit 5) as part of HBASE-29968, updating annotations/rules/categories/parameterization patterns and aligning build dependencies accordingly.

Changes:

Converted many tests from org.junit.* + @Category/@Rule/@RunWith(Parameterized.class) to org.junit.jupiter.* + @Tag, TestInfo, and Jupiter parameterized tests.
Replaced JUnit4 rules/runners (e.g., TestName, MockitoJUnitRunner) with Jupiter equivalents (TestInfo, MockitoExtension).
Updated hbase-mapreduce/pom.xml test dependencies (Mockito Jupiter integration; removal of Vintage engine).

Reviewed changes

Copilot reviewed 87 out of 87 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationBase.java	Adds Jupiter lifecycle annotations alongside JUnit4 to support mixed test hierarchies.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshotV2NoCluster.java	Minor formatting change in a Jupiter-tagged test.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/VerifyReplicationTestBase.java	Migrates assertions/lifecycle to Jupiter; introduces `TestInfo` usage.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationZkConnectionUri.java	Replaces JUnit4 categories/class rule with Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationZkClusterKey.java	Replaces JUnit4 categories/class rule with Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationSecureClusterCredentials.java	Migrates to Jupiter parameterized tests (`@MethodSource`).
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationRpcConnectionUri.java	Replaces JUnit4 categories/class rule with Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationRecompareRunnable.java	Moves to Jupiter + MockitoExtension; adjusts stubbing with `lenient()`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationCrossDiffHdfs.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationAdjunct.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactionToolNpeFix.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactionTool.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestWALRecordReader.java	Migrates lifecycle/assertions/categories; replaces “assertTrue(false)” with `fail(...)`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestWALPlayer.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestWALInputFormat.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTimeRangeMapRed.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableSplit.java	Migrates to Jupiter; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableSnapshotInputFormat.java	Migrates to Jupiter; replaces `TestName` with `TestInfo`-derived name.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableRecordReader.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableOutputFormat.java	Migrates lifecycle/assertions/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableMapReduceUtil.java	Migrates categories/class rule to Jupiter tags + Jupiter assertions.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableMapReduceBase.java	Migrates lifecycle to Jupiter.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableMapReduce.java	Migrates negative tests to `assertThrows`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanYZYToEmpty.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanYYYToEmpty.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanYYXToEmpty.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanOPPToEmpty.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanOBBToQPP.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanOBBToOPP.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanEmptyToOPP.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanEmptyToEmpty.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanEmptyToBBB.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanEmptyToBBA.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanEmptyToAPP.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanBase.java	Migrates lifecycle/assertions to Jupiter.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScan.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatBase.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormat.java	Migrates lifecycle/categories; replaces expected-exception style with `assertThrows`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestSyncTable.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestSimpleTotalOrderPartitioner.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestRowCounter.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestRoundRobinTableInputFormat.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestRegionSizeCalculator.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultithreadedTableMapper.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableSnapshotInputFormatImpl.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableSnapshotInputFormat.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableInputFormatBase.java	Migrates categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableInputFormat.java	Migrates categories/lifecycle to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMRIncrementalLoadWithLocality.java	Migrates JUnit4 Parameterized runner to Jupiter parameterized test.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMRIncrementalLoad.java	Migrates JUnit4 Parameterized runner to Jupiter parameterized test.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestJarFinder.java	Partially migrated (tags) but still uses JUnit4 test API.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestImportTsvParser.java	Migrates expected-exception tests to `assertThrows`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestImportTsv.java	Migrates rules/expected exceptions to Jupiter lifecycle + `assertThrows`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestImportExport.java	Normalizes Jupiter tag usage via imports.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHashTable.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHRegionPartitioner.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2WithSecurity.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java	Migrates assertions; replaces `@Ignore` with `@Disabled`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHBaseMRTestingUtility.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestGroupingTableMapper.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCopyTableToPeerClusterWithZkUri.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCopyTableToPeerClusterWithRpcUri.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCopyTableToPeerClusterWithClusterKey.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCopyTable.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo` plumbing.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestConfigurePartitioner.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCellCounter.java	Migrates lifecycle/categories; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatTestBase.java	Migrates lifecycle/assertions to Jupiter.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatTestBase.java	Migrates lifecycle/assertions to Jupiter.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/MRIncrementalLoadTestBase.java	Refactors parameterized setup/teardown to be invoked from Jupiter parameterized tests.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/HFileOutputFormat2TestBase.java	Migrates assertions to Jupiter.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/CopyTableToPeerClusterTestBase.java	Migrates lifecycle; replaces `TestName` usage with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/CopyTableTestBase.java	Migrates to Jupiter assertions; replaces `TestName` usage with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableSnapshotInputFormat.java	Migrates mapred snapshot tests to Jupiter (incl. `@Disabled`).
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableOutputFormatConnectionExhaust.java	Migrates lifecycle/categories to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableMapReduceUtil.java	Migrates lifecycle/categories/assertions to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableMapReduce.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableInputFormat.java	Migrates lifecycle/categories; replaces expected-exception style with `assertThrows`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestSplitTable.java	Migrates categories/assertions; replaces `TestName` with `TestInfo`.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestRowCounter.java	Migrates categories/assertions to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestMultiTableSnapshotInputFormat.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestIdentityTableMap.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestGroupingTableMap.java	Migrates categories/assertions to Jupiter tags.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestDriver.java	Migrates categories/class rule to Jupiter tags.
hbase-mapreduce/pom.xml	Switches Mockito test dependency to Jupiter integration and removes Vintage engine.

Comments suppressed due to low confidence (2)

hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/VerifyReplicationTestBase.java:95

VerifyReplicationTestBase declares a static setUpBeforeClass with the same signature as TestReplicationBase.setUpBeforeClass, but it no longer invokes the superclass setup. In JUnit 5, hiding lifecycle methods can prevent the superclass @BeforeAll from being executed, which would leave CONF1/CONF2, connections, and the mini clusters uninitialized before this method uses CONF2.

Suggested fix: either call TestReplicationBase.setUpBeforeClass() as the first statement here, or rename this method (e.g., setUpPeerTable) to avoid hiding the superclass lifecycle method and let JUnit run both setup methods.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationAdjunct.java:100

This class defines a static setUpBeforeClass that hides TestReplicationBase.setUpBeforeClass, but it does not invoke the superclass setup. This method immediately uses CONF2 to create a connection, which will fail if the mini clusters/config in TestReplicationBase were not initialized.

Suggested fix: call TestReplicationBase.setUpBeforeClass() first (or rename this method to avoid hiding the superclass lifecycle method and rely on inherited @BeforeAll).

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hbase-mapreduce/pom.xml

Copilot · 2026-03-24T13:03:26Z

...apreduce/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyReplicationAdjunct.java

+  @AfterAll
  public static void tearDownAfterClass() throws Exception {
    htable3.close();
-    TestReplicationBase.tearDownAfterClass();
  }


tearDownAfterClass no longer delegates to TestReplicationBase.tearDownAfterClass(). Since this class also hides the superclass method, the mini clusters/connections started by TestReplicationBase may never be shut down, leading to leaked resources and follow-on test failures.

Suggested fix: add TestReplicationBase.tearDownAfterClass() after closing htable3 (or rename this method to avoid hiding and rely on inherited @AfterAll).

Copilot · 2026-03-24T13:03:26Z

hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestJarFinder.java

 import java.util.jar.JarInputStream;
 import java.util.jar.JarOutputStream;
 import java.util.jar.Manifest;
-import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
 import org.junit.Assert;
-import org.junit.ClassRule;
 import org.junit.Test;
-import org.junit.experimental.categories.Category;
+import org.junit.jupiter.api.Tag;
 import org.slf4j.LoggerFactory;

 /**
 * This file was forked from hadoop/common/branches/branch-2@1350012.
 */
-@Category(SmallTests.class)
+@Tag(SmallTests.TAG)
 public class TestJarFinder {

-  @ClassRule
-  public static final HBaseClassTestRule CLASS_RULE =
-    HBaseClassTestRule.forClass(TestJarFinder.class);
-
  @Test
  public void testJar() throws Exception {



This test still imports and uses JUnit 4 (org.junit.Test / org.junit.Assert). With the removal of the junit-vintage-engine in this module, it will no longer be executed on the JUnit Platform.

Suggested fix: migrate the remaining JUnit 4 annotations/assertions to JUnit Jupiter (e.g., org.junit.jupiter.api.Test and org.junit.jupiter.api.Assertions).

liuxiaocs7 · 2026-03-24T13:55:56Z

master branch has the same result with applying the patch (56+366)

mvn clean install -DskipTests && mvn test -pl hbase-mapreduce -PrunAllTests -Dsurefire.firstPartForkCount=1 -Dsurefire.secondPartForkCount=1

default-test

[INFO] Results:
[INFO] 
[INFO] Tests run: 56, Failures: 0, Errors: 0, Skipped: 0
[INFO] 
[INFO] 
[INFO] --- surefire:3.5.3:test (secondPartTestsExecution) @ hbase-mapreduce ---
[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
[INFO] 
[INFO] Results:
[INFO] 
[WARNING] Tests run: 366, Failures: 0, Errors: 0, Skipped: 12
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------

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Pull request overview

Copilot reviewed 87 out of 87 changed files in this pull request and generated 2 comments.

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hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/MRIncrementalLoadTestBase.java

liuxiaocs7 marked this pull request as draft March 5, 2026 18:08

liuxiaocs7 force-pushed the HBASE-29968 branch from 30405f5 to 49ba880 Compare March 8, 2026 14:56

liuxiaocs7 force-pushed the HBASE-29968 branch 2 times, most recently from 36361af to 3a271d7 Compare March 17, 2026 09:01

liuxiaocs7 marked this pull request as ready for review March 17, 2026 09:01

liuxiaocs7 force-pushed the HBASE-29968 branch from 2056b28 to 7b970c7 Compare March 17, 2026 16:45

liuxiaocs7 marked this pull request as draft March 24, 2026 02:19

liuxiaocs7 force-pushed the HBASE-29968 branch from b834686 to ed9dfcb Compare March 24, 2026 07:48

liuxiaocs7 marked this pull request as ready for review March 24, 2026 07:48

liuxiaocs7 force-pushed the HBASE-29968 branch from ed9dfcb to 3a7646d Compare March 24, 2026 07:49

liuxiaocs7 commented Mar 24, 2026

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HBASE-29968 Upgrade hbase-mapreduce to use junit5

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liuxiaocs7 force-pushed the HBASE-29968 branch from 087146e to 829f6e3 Compare March 24, 2026 13:54

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HBASE-29968 Upgrade hbase-mapreduce to use junit5#7861

HBASE-29968 Upgrade hbase-mapreduce to use junit5#7861
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		public static void setUpBeforeClass() throws Exception {
		TestReplicationBase.setUpBeforeClass();

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