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https://issues.apache.org/jira/browse/HADOOP-6140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Douglas updated HADOOP-6140:
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Status: Open (was: Patch Available)
All the work for this issue should probably be in MAPREDUCE-752.
If this fix is to be included on the 0.18 branch, we'll also need fixes for the
0.19 and 0.20 branches.
> 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-ver4.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()))
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