[HDFS-11944] TestAclsEndToEnd#testCreateEncryptionZone failing very frequently.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.8.0
• Component/s: encryption, test
• Target Version/s: 3.0.0-beta1, 2.8.2

Release Note

It was not a flaky test.
Fixed it via HADOOP-14563

• Assignee: Unassigned
• Reporter: Rushabh Shah
• Created: 07/Jun/17 13:26
• Updated: 11/Jul/17 14:27
• Resolved: 11/Jul/17 14:27

Description

TestAclsEndToEnd#testCreateEncryptionZone is failing v frequently.
The way test is written makes very hard to debug.
Ideally each test case should test only one behavior.
But in this test case, it reset the dfs state many times in same test case.
It fails with the following stack trace.

Tests run: 9, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 35.17 sec <<< FAILURE! - in org.apache.hadoop.hdfs.TestAclsEndToEnd
testCreateEncryptionZone(org.apache.hadoop.hdfs.TestAclsEndToEnd)  Time elapsed: 3.844 sec  <<< FAILURE!
java.lang.AssertionError: Allowed zone creation of zone with blacklisted GENERATE_EEK
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.junit.Assert.assertFalse(Assert.java:64)
	at org.apache.hadoop.hdfs.TestAclsEndToEnd.testCreateEncryptionZone(TestAclsEndToEnd.java:753)


Results :

Failed tests: 
  TestAclsEndToEnd.testCreateEncryptionZone:753 Allowed zone creation of zone with blacklisted GENERATE_EEK

It failed in the following pre-commits.
HDFS-11885 precommit
HDFS-11804 precommit