Rajiv Ramachandran created HADOOP-18947:
-------------------------------------------
Summary: Sort strings to fix flaky test
Key: HADOOP-18947
URL: https://issues.apache.org/jira/browse/HADOOP-18947
Project: Hadoop Common
Issue Type: Bug
Components: test
Affects Versions: 3.3.6
Environment: Java version: openjdk 11.0.20.1
Maven version: Apache Maven 3.6.3
Reporter: Rajiv Ramachandran
Fix For: 3.3.6
The test
{{_org.apache.hadoop.mapreduce.jobhistory.TestHistoryViewerPrinter#testHumanPrinterAll_}}
can fail due to flakiness. These flakiness occurs because the test utilizes
Hashmaps values and converts the values to string to perform the comparision
and the order of the objects returned may not be necessarily maintained.
The stack trace is as follows:
testHumanPrinterAll(org.apache.hadoop.mapreduce.jobhistory.TestHistoryViewerPrinter)
Time elapsed: 0.297 s <<< FAILURE!
org.junit.ComparisonFailure:
expected:<...8501754_0001_m_00000[7 6-Oct-2011 19:15:09 6-Oct-2011
19:15:16 (7sec)
SUCCEEDED MAP task list for job_1317928501754_0001
TaskId StartTime FinishTime Error InputSplits
====================================================
task_1317928501754_0001_m_000006 6-Oct-2011 19:15:08 6-Oct-2011 19:15:14
(6sec)
...
/tasklog?attemptid=attempt_1317928501754_0001_m_000003]_1
REDUCE task list...> but was:<...8501754_0001_m_00000[5 6-Oct-2011 19:15:07
6-Oct-2011 19:15:12 (5sec)
SUCCEEDED MAP task list for job_1317928501754_0001
TaskId StartTime FinishTime Error InputSplits
====================================================
task_1317928501754_0001_m_000006 6-Oct-2011 19:15:08 6-Oct-2011 19:15:14
(6sec)
SUCCEEDED MAP task list for job_1317928501754_0001
TaskId StartTime FinishTime Error InputSplits
====================================================
task_1317928501754_0001_m_000004 6-Oct-2011 19:15:06 6-Oct-2011 19:15:10
(4sec)
SUCCEEDED MAP task list for job_1317928501754_0001
TaskId StartTime FinishTime Error InputSplits
====================================================
task_1317928501754_0001_m_000007 6-Oct-2011 19:15:09 6-Oct-2011 19:15:16
(7sec)
...
/tasklog?attemptid=attempt_1317928501754_0001_m_000006]_1
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