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From "Yoram Arnon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-242) job fails because of "No valid local directories in property: " exception
Date Tue, 23 May 2006 19:15:29 GMT
job fails because of "No valid local directories in property: " exception

         Key: HADOOP-242
         URL: http://issues.apache.org/jira/browse/HADOOP-242
     Project: Hadoop
        Type: Bug

  Components: mapred  
    Reporter: Yoram Arnon
 Assigned to: Sameer Paranjpye 

when running a fairly large job, of 70+K map tasks, I get many exceptions as shown below,
and eventually the job failes when a task fails four times.
The exception doesn't really tell us enough information to debug this properly, so the first
thing to do would be to add more information (path) to the exception.
The path indicated in the config file exists, is writable and valid, though 'path' may be

the exception:
java.io.IOException: No valid local directories in property: mapred.local.dir at org.apache.hadoop.conf.Configuration.getLocalPath(Configuration.java:293)
at org.apache.hadoop.mapred.JobConf.getLocalPath(JobConf.java:153) at org.apache.hadoop.mapred.TaskTracker$TaskInProgress.localizeTask(TaskTracker.java:523)
at org.apache.hadoop.mapred.TaskTracker$TaskInProgress.launchTask(TaskTracker.java:572) at
org.apache.hadoop.mapred.TaskTracker.startNewTask(TaskTracker.java:389) at org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:303)
at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:418) at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:920)

the code:
  public Path getLocalPath(String dirsProp, String path)
    throws IOException {
    String[] dirs = getStrings(dirsProp);
    int hashCode = path.hashCode();
    FileSystem fs = FileSystem.getNamed("local", this);
    for (int i = 0; i < dirs.length; i++) {  // try each local dir
      int index = (hashCode+i & Integer.MAX_VALUE) % dirs.length;
      Path file = new Path(dirs[index], path);
      Path dir = file.getParent();
      if (fs.exists(dir) || fs.mkdirs(dir)) {
        return file;
    throw new IOException("No valid local directories in property: "+dirsProp);

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