[HDFS-7525] TestDatanodeManager.testNumVersionsReportedCorrect fails occassionally in trunk

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: namenode, test
• Assignee: Unassigned
• Reporter: Yongjun Zhang
• Created: 15/Dec/14 17:19
• Updated: 16/Dec/14 07:58
• Resolved: 16/Dec/14 07:58

Description

https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport/

Error Message

The map of version counts returned by DatanodeManager was not what it was expected to be on iteration 484 expected:<0> but was:<1>
Stacktrace

java.lang.AssertionError: The map of version counts returned by DatanodeManager was not what it was expected to be on iteration 484 expected:<0> but was:<1>
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.hdfs.server.blockmanagement.TestDatanodeManager.testNumVersionsReportedCorrect(TestDatanodeManager.java:150)

Found by tool proposed in HADOOP-11045:

[yzhang@localhost jenkinsftf]$ ./determine-flaky-tests-hadoop.py -j Hadoop-Hdfs-trunk -n 5 | tee bt.log
****Recently FAILED builds in url: https://builds.apache.org//job/Hadoop-Hdfs-trunk
THERE ARE 4 builds (out of 6) that have failed tests in the past 5 days, as listed below:

===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport (2014-12-15 03:30:01)
Failed test: org.apache.hadoop.hdfs.TestDecommission.testIncludeByRegistrationName
Failed test: org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager.testNumVersionsReportedCorrect
Failed test: org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA.testUpdatePipeline
===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1972/testReport (2014-12-13 10:32:27)
Failed test: org.apache.hadoop.hdfs.TestDecommission.testIncludeByRegistrationName
===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1971/testReport (2014-12-13 03:30:01)
Failed test: org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA.testUpdatePipeline
===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1969/testReport (2014-12-11 03:30:01)
Failed test: org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager.testNumVersionsReportedCorrect
Failed test: org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA.testUpdatePipeline
Failed test: org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover.testFailoverRightBeforeCommitSynchronization

Among 6 runs examined, all failed tests <#failedRuns: testName>:
3: org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA.testUpdatePipeline
2: org.apache.hadoop.hdfs.TestDecommission.testIncludeByRegistrationName
2: org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager.testNumVersionsReportedCorrect
1: org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover.testFailoverRightBeforeCommitSynchronization

Issue Links

• duplicates: HDFS-7471 TestDatanodeManager#testNumVersionsReportedCorrect occasionally fails