Even if you did not specify which plugin you are using for minification, assuming that you used maven-minify-plugin
you will have to add <jsFinalFile>
tag with your custom name:
<plugin>
<groupId>com.samaxes.maven</groupId>
<artifactId>maven-minify-plugin</artifactId>
<version>1.3.5</version>
<executions>
<execution>
<id>min-js</id>
<phase>process-resources</phase>
<configuration>
<jsSourceDir>path/to/js/dir</jsSourceDir>
<jsSourceFiles>
<jsSourceFile>1.js</jsSourceFile>
</jsSourceFiles>
<jsFinalFile>snapshot.js</jsFinalFile>
<jsTargetDir>path/to/final/location</jsTargetDir>
</configuration>
<goals>
<goal>minify</goal>
</goals>
</execution>
</executions>