[MAPREDUCE-4964] JobLocalizer#localizeJobFiles can potentially write job.xml to the wrong user's directory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.1.1
• Component/s: mrv1
• Target Version/s: 1.2.0
• Assignee: Karthik Kambatla
• Reporter: Karthik Kambatla
• Created: 27/Jan/13 01:48
• Updated: 03/Nov/14 18:33
• Resolved: 04/Feb/13 22:17

Description

In the following code, if jobs corresponding to different users (X and Y) are localized simultaneously, it is possible that jobconf can be written to the wrong user's directory. (X's job.xml can be written to Y's directory)

  public void localizeJobFiles(JobID jobid, JobConf jConf,
      Path localJobTokenFile, TaskUmbilicalProtocol taskTracker)
      throws IOException, InterruptedException {
    localizeJobFiles(jobid, jConf,
        lDirAlloc.getLocalPathForWrite(JOBCONF, ttConf), localJobTokenFile,
        taskTracker);
  }

Issue Links

• relates to: MAPREDUCE-4843 When using DefaultTaskController, JobLocalizer not thread safe