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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3770

[Rumen] Zombie.getJobConf() results into NPE

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 0.23.0, 2.0.0-alpha
    • 0.23.1
    • tools/rumen
    • Reviewed
    • rumen job-name

    Description

      The error trace is as follows

      java.lang.NullPointerException
              at java.util.Hashtable.put(Hashtable.java:394)
              at java.util.Properties.setProperty(Properties.java:143)
              at org.apache.hadoop.conf.Configuration.set(Configuration.java:623)
              at org.apache.hadoop.mapred.JobConf.setJobName(JobConf.java:1322)
              at org.apache.hadoop.tools.rumen.ZombieJob.getJobConf(ZombieJob.java:139)
              at org.apache.hadoop.mapred.gridmix.DistributedCacheEmulator.updateHDFSDistCacheFilesList(DistributedCacheEmulator.java:315)
              at org.apache.hadoop.mapred.gridmix.DistributedCacheEmulator.buildDistCacheFilesList(DistributedCacheEmulator.java:280)
              at org.apache.hadoop.mapred.gridmix.DistributedCacheEmulator.setupGenerateDistCacheData(DistributedCacheEmulator.java:253)
              at org.apache.hadoop.mapred.gridmix.Gridmix.setupDistCacheEmulation(Gridmix.java:528)
              at org.apache.hadoop.mapred.gridmix.Gridmix.setupEmulation(Gridmix.java:501)
              at org.apache.hadoop.mapred.gridmix.Gridmix.start(Gridmix.java:433)
              at org.apache.hadoop.mapred.gridmix.Gridmix.runJob(Gridmix.java:380)
              at org.apache.hadoop.mapred.gridmix.Gridmix.access$000(Gridmix.java:56)
              at org.apache.hadoop.mapred.gridmix.Gridmix$1.run(Gridmix.java:313)
              at org.apache.hadoop.mapred.gridmix.Gridmix$1.run(Gridmix.java:311)
              at java.security.AccessController.doPrivileged(Native Method)
              at javax.security.auth.Subject.doAs(Subject.java:396)
              at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
              at org.apache.hadoop.mapred.gridmix.Gridmix.run(Gridmix.java:311)
              at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
              at org.apache.hadoop.mapred.gridmix.Gridmix.main(Gridmix.java:606)
              at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
              at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
              at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
              at java.lang.reflect.Method.invoke(Method.java:597)
              at org.apache.hadoop.util.RunJar.main(RunJar.java:200)
      

      The bug seems to be in ZombieJob#getName() where a not-null check for jobName.getValue() is missing.

      Attachments

        1. GridmixJobNameBug-v1.0.patch
          0.7 kB
          Amar Kamat

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              amar_kamat Amar Kamat
              amar_kamat Amar Kamat
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                Updated:
                Resolved: