Default value of "/tmp/hadoop/mapred/system" for JTConfig.JT_SYSTEM_DIR
prevents multiple users from running tests and starting mapred
cluster/JobTracker
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Key: MAPREDUCE-1390
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1390
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker, test
Affects Versions: 0.21.0
Reporter: Vinod K V
This was done by MAPREDUCE-181.
Same is the case with "/tmp/hadoop/mapred/staging" in LocalJobRunner.
The default values should instead point to /tmp/hadoop-$user/.
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