[HDFS-9691] TestBlockManagerSafeMode#testCheckSafeMode fails intermittently

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Mingliang Liu
• Reporter: Mingliang Liu
• Created: 23/Jan/16 19:02
• Updated: 30/Aug/16 01:20
• Resolved: 15/Feb/16 05:04

Description

It's a flaky test method and can rarely re-produce locally. We can see this happened in recent build, e.g.

• https://builds.apache.org/job/PreCommit-HDFS-Build/14225/testReport/org.apache.hadoop.hdfs.server.blockmanagement/TestBlockManagerSafeMode/testCheckSafeMode/
• https://builds.apache.org/job/PreCommit-HDFS-Build/14139/testReport/org.apache.hadoop.hdfs.server.blockmanagement/TestBlockManagerSafeMode/testCheckSafeMode/

Error Message

expected:<EXTENSION> but was:<OFF>
Stacktrace

java.lang.AssertionError: expected:<EXTENSION> but was:<OFF>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:743)
	at org.junit.Assert.assertEquals(Assert.java:118)
	at org.junit.Assert.assertEquals(Assert.java:144)
	at org.apache.hadoop.hdfs.server.blockmanagement.TestBlockManagerSafeMode.testCheckSafeMode(TestBlockManagerSafeMode.java:165)