hadoop jar and hadoop/mapred pipes might return exit code 0 even when failing
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Key: HADOOP-6030
URL: https://issues.apache.org/jira/browse/HADOOP-6030
Project: Hadoop Core
Issue Type: Bug
Reporter: Christian Kunz
up to hadoop 0.18.3 org.apache.hadoop.mapred.JobShell ensured that 'hadoop
jar' returns non-zero exit code when the job fails.
This is no longer true after moving this to org.apache.hadoop.util.RunJar.
Pipes jobs submitted through cli never returned proper exit code.
The main methods in org.apache.hadoop.util.RunJar. and
org.apache.hadoop.mapred.pipes.Submitter should be modified to return an exit
code similar to how org.apache.hadoop.mapred.JobShell did it.
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