Mogens Heller Grabe created ZOOKEEPER-3291:
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Summary: improve error message when JAVA_HOME is set to the wrong
value
Key: ZOOKEEPER-3291
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3291
Project: ZooKeeper
Issue Type: Improvement
Components: scripts
Affects Versions: 3.4.12
Environment: Windows
Reporter: Mogens Heller Grabe
This is small (Windows-based) developer usability improvement.
When the {{JAVA_HOME}} environment variable is set, but the value is wrong (so
that {{JAVA_HOME}} + {{/bin/java.exe}} does not point correctly to
{{java.exe}}), the startup script will simply fail with the message
{{Error: JAVA_HOME is incorrectly set.}}
which is a bummer. 😞
With this tiny change, the error message will be much friendlier:
{{Error: JAVA_HOME is incorrectly set: C:\Program Files\Java\jre1.8.0_201\bin}}
{{Expected to find java.exe here: C:\Program
Files\Java\jre1.8.0_201\bin\bin\java.exe}}
(in this case showing a situation where one has inadvertently included {{/bin}}
in the {{JAVA_HOME}} environment variable).
This will also give a nicer error message in situations, where the JRE has been
updated, and the one pointed to by {{JAVA_HOME}} has been uninstalled.
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