You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Vladimir Klimontovich (JIRA)" <ji...@apache.org> on 2009/07/10 19:37:14 UTC
[jira] Updated: (HADOOP-6140)
DistributedCache.addArchiveToClassPath doesn't work in 0.18.x branch
[ https://issues.apache.org/jira/browse/HADOOP-6140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vladimir Klimontovich updated HADOOP-6140:
------------------------------------------
Priority: Major (was: Minor)
Summary: DistributedCache.addArchiveToClassPath doesn't work in 0.18.x branch (was: addArchiveToClassPath doesn't work in 0.18.x branch)
> DistributedCache.addArchiveToClassPath doesn't work in 0.18.x branch
> --------------------------------------------------------------------
>
> Key: HADOOP-6140
> URL: https://issues.apache.org/jira/browse/HADOOP-6140
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.18.3
> Reporter: Vladimir Klimontovich
> Attachments: HADOOP-6140.patch
>
>
> addArchiveToClassPath is a method of DistributedCache class. It should be called before running a task. It accepts path to a jar file on a DFS. After it
> this method should put this jar file on sitribuuted cache and than add this file to classpath to each map/reduce process on job tracker.
> This method didn't work.
> Bug 1:
> addArchiveToClassPath adds DFS-path to archive to mapred.job.classpath.archives property. It uses System.getProperty("path.separator") as delimiter of multiple path.
> getFileClassPaths that is called from TaskRunner uses splits mapred.job.classpath.archives using System.getProperty("path.separator").
> In unix systems System.getProperty("path.separator") equals to ":". DFS-path urls is hdfs://host:port/path. It means that a result of split will be
> [ hdfs,//host,port/path].
> Suggested solution: use "," instead of
> Bug 2:
> in TaskRunner there is an algorithm that looks for correspondence between DFS paths and local paths in distributed cache.
> It compares
> if (archives[i].getPath().equals(
> archiveClasspaths[j].toString())){
> instead of
> if (archives[i].toString().equals(
> archiveClasspaths[j].toString()))
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.