[MAPREDUCE-3770] [Rumen] Zombie.getJobConf() results into NPE

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.23.0, 2.0.0-alpha
• Fix Version/s: 0.23.1
• Component/s: tools/rumen
• Labels: job-name rumen
• Hadoop Flags: Reviewed
• Tags: rumen job-name
• Assignee: Amar Kamat
• Reporter: Amar Kamat
• Created: 31/Jan/12 06:54
• Updated: 10/Mar/15 04:31
• Resolved: 08/Feb/12 11:12

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.

Issue Links

• blocks: MAPREDUCE-3719 Make gridmix performance on YARN+MR to match or exceed that on 1.0
• duplicates: MAPREDUCE-3797 lGridMix fails to Run with NPE with latest branch-0.23 code