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Posted to mapreduce-issues@hadoop.apache.org by "Lei (Eddy) Xu (JIRA)" <ji...@apache.org> on 2018/04/05 20:18:00 UTC
[jira] [Updated] (MAPREDUCE-7064) Flaky test
TestTaskAttempt#testReducerCustomResourceTypes
[ https://issues.apache.org/jira/browse/MAPREDUCE-7064?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lei (Eddy) Xu updated MAPREDUCE-7064:
-------------------------------------
Fix Version/s: (was: 3.0.2)
3.0.3
> Flaky test TestTaskAttempt#testReducerCustomResourceTypes
> ---------------------------------------------------------
>
> Key: MAPREDUCE-7064
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7064
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client, test
> Reporter: Peter Bacsko
> Assignee: Peter Bacsko
> Priority: Major
> Fix For: 3.1.0, 3.0.3
>
> Attachments: MAPREDUCE-7064-001.patch, MAPREDUCE-7064-002.patch, MAPREDUCE-7064-003.patch
>
>
> The test {{TestTaskAttempt#testReducerCustomResourceType}} can occasionally fail with the following error:
> {noformat}
> org.apache.hadoop.yarn.exceptions.ResourceNotFoundException: Unknown resource 'a-custom-resource'. Known resources are [name: memory-mb, units: Mi, type: COUNTABLE, value: 0, minimum allocation: 0, maximum allocation: 9223372036854775807, name: vcores, units: , type: COUNTABLE, value: 0, minimum allocation: 0, maximum allocation: 9223372036854775807]
> at org.apache.hadoop.mapreduce.v2.app.job.impl.TestTaskAttempt.createReduceTaskAttemptImplForTest(TestTaskAttempt.java:434)
> at org.apache.hadoop.mapreduce.v2.app.job.impl.TestTaskAttempt.testReducerCustomResourceTypes(TestTaskAttempt.java:1535)
> {noformat}
> The root cause seems to be an interference from previous tests that start instance(s) of {{FailingAttemptsMRApp}} or {{FailingAttemptsDuringAssignedMRApp}}. When I disabled these tests, {{testReducerCustomResourceTypes}} always passed.
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