[jira] [Created] (HADOOP-17769) Upgrade JUnit to 4.13.2

["Ahmed Hussein (Jira)" <ji...@apache.org>]

Ahmed Hussein created HADOOP-17769:
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             Summary: Upgrade JUnit to 4.13.2
                 Key: HADOOP-17769
                 URL: https://issues.apache.org/jira/browse/HADOOP-17769
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Ahmed Hussein
            Assignee: Ahmed Hussein


JUnit 4.13.1 has a bug that is reported in Junit [issue-1652|https://github.com/junit-team/junit4/issues/1652] _Timeout ThreadGroups should not be destroyed_

After upgrading Junit to 4.13.1 in HADOOP-17602, {{TestBlockRecovery}}  started to fail regularly in branch-3.x and branch-2.10.
While investigating the failure in branch-2.10 HDFS-16072, I found out that the bug is the main reason {{TestBlockRecovery}}  started to fail because the timeout of the Junit would try to close a ThreadGroup that has been already closed which throws the {{java.lang.IllegalThreadStateException}}.

The bug has been fixed in Junit-4.13.2

For branch-3.x, HDFS-15940 did not address the root cause of the problem. Eventually, Splitting the {{TestBlockRecovery}} hid the bug, but the upgrade needs to be done so that the problem does not show up in another unit test.



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