[ACCUMULO-4005] AccumuloClassLoader not finding classes

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.7.0
• Component/s: start
• Flags: Patch
• Assignee: Unassigned
• Reporter: Jim Klucar
• Created: 20/Sep/15 22:50
• Updated: 14/Sep/21 18:01
• Resolved: 14/Sep/21 18:01

Description

org.apache.accumulo.start.classloader.AccumuloClassLoader is not correctly loading classes described in the general.classpaths property. Is appears that if a classpath contains an environment variable for substitution, the class/regex will get loaded. The offending line of code is a boolean logic error on line 198.

if (extDir.isDirectory())
urls.add(extDir.toURI().toURL());
else {
...

the correction should be

if(extDir.isFile())

but I have not tested this.

A workaround is to add a bogus environment variable that will substitute to the empty string in general.classpaths For example
$DOESNT_EXIST/usr/lib/hadoop/[^.].*.jar