Use enum for shell exit codes
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Key: HADOOP-8155
URL: https://issues.apache.org/jira/browse/HADOOP-8155
Project: Hadoop Common
Issue Type: Improvement
Components: fs
Affects Versions: 0.23.0, 0.24.0
Reporter: Daryn Sharp
Priority: Minor
FsShell currently returns -1 (syntax error), 0 (success), 1 (error), 130 (hit
by interrupt). Uma has suggested that an enum would be a cleaner approach to
tracking the exits. DFSAdmin will also require changes to support this
improvement since it currently subclasses FsShell.
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