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Posted to hdfs-dev@hadoop.apache.org by "fanluo (Jira)" <ji...@apache.org> on 2023/04/25 13:50:00 UTC

[jira] [Created] (HDFS-16991) Fix testMkdirsRaceWithObserverRead

fanluo created HDFS-16991:
-----------------------------

             Summary: Fix testMkdirsRaceWithObserverRead
                 Key: HDFS-16991
                 URL: https://issues.apache.org/jira/browse/HDFS-16991
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs
    Affects Versions: 3.3.4
            Reporter: fanluo


The test case testMkdirsRaceWithObserverRead which in TestObserverNode sometimes failed like this:
{code:java}
java.lang.AssertionError: Client #1 lastSeenStateId=-9223372036854775808 activStateId=5
null    at org.junit.Assert.fail(Assert.java:89)
    at org.junit.Assert.assertTrue(Assert.java:42)
    at org.apache.hadoop.hdfs.server.namenode.ha.TestObserverNode.testMkdirsRaceWithObserverRead(TestObserverNode.java:607)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) {code}
i think the Thread.sleep() should move into the sub threads, like this:
{code:java}
public void run() {
  try {
    fs.mkdirs(DIR_PATH);
    Thread.sleep(150); // wait until mkdir is logged
    clientState.lastSeenStateId = HATestUtil.getLastSeenStateId(fs);
    assertSentTo(fs, 0);    FileStatus stat = fs.getFileStatus(DIR_PATH);
    assertSentTo(fs, 2);
    assertTrue("Should be a directory", stat.isDirectory());
  } catch (FileNotFoundException ioe) {
    clientState.fnfe = ioe;
  } catch (Exception e) {
    fail("Unexpected exception: " + e);
  }
} {code}



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