[MAPREDUCE-4066] To get "yarn.app.mapreduce.am.staging-dir" value, should set the default value

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.23.1
• Fix Version/s: 2.0.0-alpha
• Component/s: job submission, mrv2

Environment

client is windows eclipse, server is suse

• Hadoop Flags: Reviewed
• Assignee: xieguiming
• Reporter: xieguiming
• Created: 26/Mar/12 06:46
• Updated: 23/May/12 20:28
• Resolved: 26/Mar/12 13:33

Description

when submit the job use the windows eclipse, and the yarn.app.mapreduce.am.staging-dir value is null.

MRApps.java

  public static Path getStagingAreaDir(Configuration conf, String user) {
    return new Path(
        conf.get(MRJobConfig.MR_AM_STAGING_DIR) + 
        Path.SEPARATOR + user + Path.SEPARATOR + STAGING_CONSTANT);
  }

should modify to:

MRApps.java

  public static Path getStagingAreaDir(Configuration conf, String user) {
    return new Path(
        conf.get(MRJobConfig.MR_AM_STAGING_DIR,"/tmp/hadoop-yarn/staging") + 
        Path.SEPARATOR + user + Path.SEPARATOR + STAGING_CONSTANT);
  }