Jobs use incorrect path to job.xml for different users
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Key: HADOOP-2007
URL: https://issues.apache.org/jira/browse/HADOOP-2007
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.14.1
Environment: OS: Red Hat Enterprise Linux AS release 4 (Nahant Update
5) - AMD64
JRE: java full version "1.6.0_02-b05"
Reporter: Ryan Lynch
We run hadoop/hdfs under a generic username of 'hadoop'. When submitting a job
as user 'fred', the job.xml file gets created correctly as
/tmp/*hadoop-fred*/mapred/system/<job_id>/job.xml, but the JobInProgress
constructor appears to use the incorrect path of
/tmp/*hadoop-hadoop*/mapred/system/<job_id>/job.xml for the copyToLocalFile
operation. This results in an exception because the job.xml file does not
exist under /tmp/hadoop-hadoop.
I think the incorrect path gets created on line 133 in JobInProgress.java right
before the call to copyToLocalFile. If I hardcode the correct path (just to
test my theory) of "/tmp/hadoop-fred/mapred/system" in place of the call to
default_conf.getSystemDir(), the job kicks off and runs to completion as the
user 'fred' with hadoop/hdfs running as the user 'hadoop'.
Here's a portion of the output when the job is submitted by user 'fred':
[EMAIL PROTECTED] ~]$ hadoop --config /usr/local/hadoop/conf jar
/usr/local/hadoop/current/hadoop-0.14.1-examples.jar wordcount
mytest/input/data output2
07/10/07 17:52:14 INFO mapred.FileInputFormat: Total input paths to process : 62
org.apache.hadoop.ipc.RemoteException: java.io.IOException:
/tmp/hadoop-hadoop/mapred/system/job_200710071751_0002/job.xml: No such file or
directory
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:138)
at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:803)
at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:784)
at org.apache.hadoop.mapred.JobInProgress.<init>(JobInProgress.java:134)
at org.apache.hadoop.mapred.JobTracker.submitJob(JobTracker.java:1479)
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