[HDFS-12247] Ozone: KeySpaceManager should unregister KSMMetrics upon stop

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-7240
• Fix Version/s: HDFS-7240
• Component/s: ozone
• Target Version/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 02/Aug/17 09:51
• Updated: 26/Apr/18 21:52
• Resolved: 03/Aug/17 19:48

Description

The test TestKSMMetrcis#[.testVolumeOps,.testKeyOps] fails constantly recently. The stack info:

java.lang.AssertionError: Bad value for metric NumVolumeOps expected:<6> but was:<0>
	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:555)
	at org.apache.hadoop.test.MetricsAsserts.assertCounter(MetricsAsserts.java:227)
	at org.apache.hadoop.ozone.ksm.TestKSMMetrcis.testVolumeOps(TestKSMMetrcis.java:89)

Seemed after the commit of HDFS-12034, the failures appeared.