Uwe Schindler created LUCENE-5465:
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Summary: Solr Contrib "map-reduce" breaks Manifest of all other
JAR files by adding a broken Main-Class attribute
Key: LUCENE-5465
URL: https://issues.apache.org/jira/browse/LUCENE-5465
Project: Lucene - Core
Issue Type: Bug
Affects Versions: 4.7
Reporter: Uwe Schindler
Assignee: Uwe Schindler
The addition of the Solr map-reduce contrib created a new "main.class"
property, which is used by the jarify task. Currently only the map-reduce
plugin actually set this property, soall other generated JAR files contain the
following line:
{{Main-Class: $\{main.class\}}}
This happens because the ANT property "main.class" is undefined for most
modules. Maybe this was added for one of the modules (I assume that the
Solr-Morphline JARs use this attribute?). We should add some if/then/else
structure to the {{<jarify/>}} task that only sets this property, if it is
actually defined. Otherwise remove it (I think ANT does this automatically if
its empty, means string-empty, have to try out)
This leads to an error if the file is double-clicked or started via {{java
-jar}}:
{noformat}
C:\Users\Uwe Schindler\Desktop>java -jar lucene-core-4.7.0.jar
Fehler: Hauptklasse ${main.class} konnte nicht gefunden oder geladen werden
{noformat}
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