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From "Mahadev konar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2317) HadoopArchives throwing NullPointerException while creating hadoop archives (.har files)
Date Tue, 12 Apr 2011 21:04:05 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019045#comment-13019045
] 

Mahadev konar commented on MAPREDUCE-2317:
------------------------------------------

devaraj,
 the jira says that the bug affects 0.23 and the fix is for 0.23. But you mentioned above
that the trunk doesnt have this issue? Do you intend to close the jira as resolved?

> HadoopArchives throwing NullPointerException while creating hadoop archives (.har files)
> ----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2317
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2317
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: harchive
>    Affects Versions: 0.20.1, 0.23.0
>         Environment: windows
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2317.patch
>
>
> While we are trying to run hadoop archive tool in widows using this way, it is giving
the below exception.
> java org.apache.hadoop.tools.HadoopArchives -archiveName temp.har D:/test/in E:/temp
> {code:xml} 
> java.lang.NullPointerException
> 	at org.apache.hadoop.tools.HadoopArchives.writeTopLevelDirs(HadoopArchives.java:320)
> 	at org.apache.hadoop.tools.HadoopArchives.archive(HadoopArchives.java:386)
> 	at org.apache.hadoop.tools.HadoopArchives.run(HadoopArchives.java:725)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> 	at org.apache.hadoop.tools.HadoopArchives.main(HadoopArchives.java:739)
> {code} 
> I see the code flow to handle this feature in windows also, 
> {code:title=Path.java|borderStyle=solid}
> /** Returns the parent of a path or null if at root. */
>   public Path getParent() {
>     String path = uri.getPath();
>     int lastSlash = path.lastIndexOf('/');
>     int start = hasWindowsDrive(path, true) ? 3 : 0;
>     if ((path.length() == start) ||               // empty path
>         (lastSlash == start && path.length() == start+1)) { // at root
>       return null;
>     }
>     String parent;
>     if (lastSlash==-1) {
>       parent = CUR_DIR;
>     } else {
>       int end = hasWindowsDrive(path, true) ? 3 : 0;
>       parent = path.substring(0, lastSlash==end?end+1:lastSlash);
>     }
>     return new Path(uri.getScheme(), uri.getAuthority(), parent);
>   }
> {code} 

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