[MAPREDUCE-2317] HadoopArchives throwing NullPointerException while creating hadoop archives (.har files)

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.20.3
• Fix Version/s: 0.21.1, 0.22.0, 0.23.0
• Component/s: harchive

Environment

windows

• Hadoop Flags: Reviewed
• Assignee: Devaraj Kavali
• Reporter: Devaraj Kavali
• Created: 10/Feb/11 12:10
• Updated: 15/Nov/11 00:49
• Resolved: 22/Apr/11 20:43

Description

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

 

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)

I see the code flow to handle this feature in windows also,

Path.java

/** 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);
  }