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https://issues.apache.org/jira/browse/YARN-8775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16618803#comment-16618803
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Antal Bálint Steinbach commented on YARN-8775:
----------------------------------------------
Hi [~snemeth] ,
Thanks for the comments. All issues fixed.
> TestDiskFailures.testLocalDirsFailures sometimes can fail on concurrent File
> modifications
> ------------------------------------------------------------------------------------------
>
> Key: YARN-8775
> URL: https://issues.apache.org/jira/browse/YARN-8775
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test, yarn
> Affects Versions: 3.0.0
> Reporter: Antal Bálint Steinbach
> Assignee: Antal Bálint Steinbach
> Priority: Major
> Attachments: YARN-8775.001.patch, YARN-8775.002.patch
>
>
> The test can fail sometimes when file operations were done during the check
> done by the thread in _LocalDirsHandlerService._
> {code:java}
> java.lang.AssertionError: NodeManager could not identify disk failure.
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at
> org.apache.hadoop.yarn.server.TestDiskFailures.verifyDisksHealth(TestDiskFailures.java:239)
> at
> org.apache.hadoop.yarn.server.TestDiskFailures.testDirsFailures(TestDiskFailures.java:202)
> at
> org.apache.hadoop.yarn.server.TestDiskFailures.testLocalDirsFailures(TestDiskFailures.java:99)
> Stderr
> 2018-09-13 08:21:49,822 INFO [main] server.TestDiskFailures
> (TestDiskFailures.java:prepareDirToFail(277)) - Prepared
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_1
> to fail.
> 2018-09-13 08:21:49,823 INFO [main] server.TestDiskFailures
> (TestDiskFailures.java:prepareDirToFail(277)) - Prepared
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_3
> to fail.
> 2018-09-13 08:21:49,823 WARN [DiskHealthMonitor-Timer]
> nodemanager.DirectoryCollection (DirectoryCollection.java:checkDirs(283)) -
> Directory
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_1
> error, Not a directory:
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_1,
> removing from list of valid directories
> 2018-09-13 08:21:49,824 WARN [DiskHealthMonitor-Timer]
> localizer.ResourceLocalizationService
> (ResourceLocalizationService.java:initializeLogDir(1329)) - Could not
> initialize log dir
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_3
> java.io.FileNotFoundException: Destination exists and is not a directory:
> /tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_3
> at
> org.apache.hadoop.fs.RawLocalFileSystem.mkdirsWithOptionalPermission(RawLocalFileSystem.java:515)
> at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:496)
> at org.apache.hadoop.fs.FileSystem.primitiveMkdir(FileSystem.java:1081)
> at
> org.apache.hadoop.fs.DelegateToFileSystem.mkdir(DelegateToFileSystem.java:178)
> at org.apache.hadoop.fs.FilterFs.mkdir(FilterFs.java:205)
> at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:747)
> at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:743)
> at org.apache.hadoop.fs.FSLinkResolver.resolve(FSLinkResolver.java:90)
> at org.apache.hadoop.fs.FileContext.mkdir(FileContext.java:743)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.initializeLogDir(ResourceLocalizationService.java:1324)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.initializeLogDirs(ResourceLocalizationService.java:1318)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.access$000(ResourceLocalizationService.java:141)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$2.onDirsChanged(ResourceLocalizationService.java:269)
> at
> org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.checkDirs(DirectoryCollection.java:317)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.checkDirs(LocalDirsHandlerService.java:452)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.access$500(LocalDirsHandlerService.java:52)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService$MonitoringTimerTask.run(LocalDirsHandlerService.java:166)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> 2018-09-13 08:21:59,824 INFO [main] server.TestDiskFailures
> (TestDiskFailures.java:verifyDisksHealth(237)) - ExpectedDirs=
> 2018-09-13 08:21:59,825 INFO [main] server.TestDiskFailures
> (TestDiskFailures.java:verifyDisksHealth(238)) -
> SeenDirs=/tmp/dist-test-taskjUrf0_/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/target/org.apache.hadoop.yarn.server.TestDiskFailures/org.apache.hadoop.yarn.server.TestDiskFailures-logDir-nm-0_3
> {code}
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