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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (Jira)" <ji...@apache.org> on 2020/11/30 01:02:50 UTC
[jira] [Commented] (MAPREDUCE-7311) Fix non-idempotent test in
TestTaskProgressReporter
[ https://issues.apache.org/jira/browse/MAPREDUCE-7311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17240414#comment-17240414 ]
Hadoop QA commented on MAPREDUCE-7311:
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.40 ServerAPI=1.40 base: https://ci-hadoop.apache.org/job/PreCommit-MAPREDUCE-Build/48/artifact/out/Dockerfile |
| JIRA Issue | MAPREDUCE-7311 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/13016189/MAPREDUCE-7311.001.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux f95dc0d3d0bd 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / 68442b48c8a |
| Default Java | Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01 |
| Test Results | https://ci-hadoop.apache.org/job/PreCommit-MAPREDUCE-Build/48/testReport/ |
| Max. process+thread count | 1609 (vs. ulimit of 5500) |
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core |
| Console output | https://ci-hadoop.apache.org/job/PreCommit-MAPREDUCE-Build/48/console |
| versions | git=2.17.1 maven=3.6.0 findbugs=4.0.6 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
> Fix non-idempotent test in TestTaskProgressReporter
> ---------------------------------------------------
>
> Key: MAPREDUCE-7311
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7311
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Zhengxi Li
> Priority: Minor
> Attachments: MAPREDUCE-7311.001.patch
>
>
> The test {{`org.apache.hadoop.mapred.TestTaskProgressReporter.testBytesWrittenRespectingLimit`}} is not idempotent and fails if run twice in the same JVM, because it pollutes state shared among tests. It may be good to clean this state pollution so that some other tests do not fail in the future due to the shared state polluted by this test.
> h3. Details
> Running {{`TestTaskProgressReporter.testBytesWrittenRespectingLimit`}} twice would result in the second run failing with the following assertion:
> {noformat}
> Assert.assertEquals(failFast, threadExited)
> {noformat}
> The root cause for this is that when`testBytesWrittenRespectingLimit` writes some bytes on the local file system, some counters are being incremented. The problem is that, after the test is done, the counter is not reset. With this polluted shared state, assumptions are broken, resulting in test failure in the second run.
> PR link: https://github.com/apache/hadoop/pull/2500
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