[HDFS-11178] TestAddStripedBlockInFBR#testAddBlockInFullBlockReport fails frequently in trunk

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha2
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 27/Nov/16 08:11
• Updated: 07/Dec/16 01:38
• Resolved: 06/Dec/16 17:05

Description

The test TestAddStripedBlockInFBR#testAddBlockInFullBlockReport fails easily in trunk. It's easy to reproduce the failure, it fails 2~3 times when I run the test 4~-5 times in my local. Also it failed in the recent Jenkins(https://builds.apache.org/job/PreCommit-HDFS-Build/17667/testReport/), The stack infos:

java.lang.AssertionError: expected:<9> but was:<7>
	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.junit.Assert.assertEquals(Assert.java:542)
	at org.apache.hadoop.hdfs.server.namenode.TestAddStripedBlockInFBR.testAddBlockInFullBlockReport(TestAddStripedBlockInFBR.java:108)

It's easy to have a fix: Use GenericTestUtils.waitFor to wait the full blocks being reported.