java.lang.AssertionError: NN should be in safe mode after resources crossed threshold

hadoop-hdfs-dev | Apache Jenkins Server | 1 year ago
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    Hadoop-Hdfs-trunk-Java8 - Build # 749 - Still Failing

    hadoop-hdfs-dev | 1 year ago | Apache Jenkins Server
    java.lang.AssertionError: NN should be in safe mode after resources crossed threshold
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    samebug tip
    Check your pattern declaration or check your assert declaration.
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    JUnit AssertTrue doesn't fail the test

    Stack Overflow | 1 year ago | Aharon
    java.lang.AssertionError: retval = 1026
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    RawQueryDefinitionTest Output without a match

    GitHub | 3 years ago | sammefford
    java.lang.AssertionError: Output without a match

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Root Cause Analysis

  1. java.lang.AssertionError

    NN should be in safe mode after resources crossed threshold

    at org.junit.Assert.fail()
  2. JUnit
    Assert.assertTrue
    1. org.junit.Assert.fail(Assert.java:88)
    2. org.junit.Assert.assertTrue(Assert.java:41)
    2 frames
  3. Apache Hadoop HDFS
    TestNameNodeResourceChecker.testCheckThatNameNodeResourceMonitorIsRunning
    1. org.apache.hadoop.hdfs.server.namenode.TestNameNodeResourceChecker.testCheckThatNameNodeResourceMonitorIsRunning(TestNameNodeResourceChecker.java:130)
    1 frame