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https://issues.apache.org/jira/browse/HADOOP-3440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhijit Bagri updated HADOOP-3440:
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Attachment: DistributedCache.java.patch
Created patch
> TaskRunner creates a symlink with name 'null' if a file is added to
> DistributedCache without fragment
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3440
> URL: https://issues.apache.org/jira/browse/HADOOP-3440
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Abhijit Bagri
> Priority: Minor
> Attachments: DistributedCache.java.patch
>
>
> When adding a file to DistributedCache by either :
> 1. DistributedCache.addCacheArchive(URI, conf) with URI not defining
> fragment(e.g. not as new URI("path#fragment") )
> 2. DistributedCache.addCacheFile(URI, conf) with URI not defining
> fragment(e.g. not as new URI("path#fragment") )
> 3. DistributedCache.addArchiveToClassPath(Path, conf)
> and one sets DistributedCache.createSymlink, TaskRunner creates a link with
> name 'null' in the working directory.
> I think the behavior should be that if fragment is null then no sym link
> should be created, adding in localizeCache() of DistributedCache the following
> {code}
> boolean doSymlink = getSymlink(conf);
> + if(cache.getFragment() == null) {
> + doSymlink = false;
> + }
> FileSystem fs = getFileSystem(cache, conf);
> {code}
>
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