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MapReduce, mail # user - Yarn Writing ApplicationMaster, Client Exception "URISyntaxException: Expected scheme name at index 0"


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Re: Yarn Writing ApplicationMaster, Client Exception "URISyntaxException: Expected scheme name at index 0"
Harsh J 2013-03-26, 00:29
YARN does not seem to be checking for a fully qualified path when you
pass it yours and ends up breaking. The problem is easily reproducible
with the two transforming calls from ConverterUtils.

Transform the jarPath to a fully qualified one like so, before using
it anywhere:

Path jarPath = new Path("/Working_HDFS_DIR/"+ appId +"/"+AM_JAR);
jarPath = fs.makeQualified(jarPath);

And the problem should disappear.
On Mon, Mar 25, 2013 at 10:57 PM, blah blah <[EMAIL PROTECTED]> wrote:
> Hi
>
> I am trying to create my own Application Master. I have followed this
> tutorial
> http://hadoop.apache.org/docs/r2.0.2-alpha/hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html
> However I have problem with reading AM jar as resource at the container.
> Code for passing AM.jar
>
> Path jarPath = new Path("/Working_HDFS_DIR/"+ appId +"/"+AM_JAR);
> fs.copyFromLocalFile(new Path("/local/src/AM.jar"), jarPath); // VALIDATED
> jar is in HDFS under correct PATH
> FileStatus jarStatus = fs.getFileStatus(jarPath);
> LocalResource amJarRsrc = Records.newRecord(LocalResource.class);
> amJarRsrc.setType(LocalResourceType.FILE);
> amJarRsrc.setVisibility(LocalResourceVisibility.APPLICATION);
> amJarRsrc.setResource(ConverterUtils.getYarnUrlFromPath(jarPath));
> amJarRsrc.setTimestamp(jarStatus.getModificationTime());
> amJarRsrc.setSize(jarStatus.getLen());
> localResources.put("AppMaster.jar",  amJarRsrc);
> amContainer.setLocalResources(localResources);
>
> Error logs (nodeManager.log)
>
> INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.application.Application:
> Application application_1364219323374_0016 transitioned from INITING to
> RUNNING
> INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container:
> Got exception parsing AppMaster.jar and value resource {, port: -1, file:
> "/Working_HDFS_DIR/application_1364219323374_0016/AM.jar", }, size: 13940,
> timestamp: 1364230436600, type: FILE, visibility: APPLICATION,
> 2013-03-25 17:53:57,391 WARN
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container:
> Failed to parse resource-request
> java.net.URISyntaxException: Expected scheme name at index 0:
> :///Working_HDFS_DIR/application_1364219323374_0016/AM.jar
> at java.net.URI$Parser.fail(URI.java:2810)
> at java.net.URI$Parser.failExpecting(URI.java:2816)
> at java.net.URI$Parser.parse(URI.java:3008)
> at java.net.URI.<init>(URI.java:735)
> at
> org.apache.hadoop.yarn.util.ConverterUtils.getPathFromYarnURL(ConverterUtils.java:70)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourceRequest.<init>(LocalResourceRequest.java:46)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RequestResourcesTransition.transition(ContainerImpl.java:501)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RequestResourcesTransition.transition(ContainerImpl.java:472)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:382)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:299)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:43)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:445)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl.handle(ContainerImpl.java:828)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl.handle(ContainerImpl.java:71)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl$ContainerEventDispatcher.handle(ContainerManagerImpl.java:556)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl$ContainerEventDispatcher.handle(ContainerManagerImpl.java:549)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:130)

Harsh J