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From "Chuan Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9865) FileContext.globStatus() has a regression with respect to relative path
Date Mon, 12 Aug 2013 23:27:48 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chuan Liu updated HADOOP-9865:

    Attachment: HADOOP-9865-demo.patch

Attach a patch demonstrating the problem described above. I will work on a more complete fix
and add some unit tests.
> FileContext.globStatus() has a regression with respect to relative path
> -----------------------------------------------------------------------
>                 Key: HADOOP-9865
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9865
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Chuan Liu
>            Assignee: Chuan Liu
>         Attachments: HADOOP-9865-demo.patch
> I discovered the problem when running unit test TestMRJobClient. The cause is indirect
in this case. In the unit test, we try to launch a job and list its status. The job failed,
and caused the list command get a result of 0, which triggered the unit test assert. From
the log and debug, the job failed because we failed to create the Jar with classpath (see
code around {{FileUtil.createJarWithClassPath}}) in {{ContainerLaunch}}. This step failed
because we passed in a relative path to {{FileContext.globStatus()}} in {{FileUtil.createJarWithClassPath}}.
The relevant log looks like the following.
> {noformat}
> 2013-08-12 16:12:05,937 WARN  [ContainersLauncher #0] launcher.ContainerLaunch (ContainerLaunch.java:call(270))
- Failed to launch container.
> org.apache.hadoop.HadoopIllegalArgumentException: Path is relative
> 	at org.apache.hadoop.fs.Path.checkNotRelative(Path.java:74)
> 	at org.apache.hadoop.fs.FileContext.getFSofPath(FileContext.java:304)
> 	at org.apache.hadoop.fs.Globber.schemeFromPath(Globber.java:107)
> 	at org.apache.hadoop.fs.Globber.glob(Globber.java:128)
> 	at org.apache.hadoop.fs.FileContext$Util.globStatus(FileContext.java:1908)
> 	at org.apache.hadoop.fs.FileUtil.createJarWithClassPath(FileUtil.java:1247)
> 	at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.sanitizeEnv(ContainerLaunch.java:679)
> 	at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:232)
> 	at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:1)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
> {noformat}
> I think this is a regression from HADOOP-9817. I modified some code and the unit test
passed. (See the attached patch.) However, I think the impact is larger. I will add some unit
tests to verify the behavior, and work on a more complete fix.

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