Steve Loughran created HADOOP-11061:
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Summary: Make Shell probe for winutils.exe more rigorous
Key: HADOOP-11061
URL: https://issues.apache.org/jira/browse/HADOOP-11061
Project: Hadoop Common
Issue Type: Bug
Components: native
Affects Versions: 2.5.0
Environment: windows
Reporter: Steve Loughran
Priority: Minor
The probe for winutils.exe being valid is simple: it looks for the file
existing.
It could be stricter and catch some (unlikely but possible) failure modes:
# winutils.exe being a directory
# winutils.exe being a 0-byte file
# winutils.exe not being readable
# winutils.exe not having the magic "MZ" header
These tests could all be combined simply by opening the file and validating the
header ... all the conditions above would be detected
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