rmannibucau commented on PR #160:
URL: 
https://github.com/apache/maven-compiler-plugin/pull/160#issuecomment-1348539648

   > "incremental" feature may bring 4 minute gain on 300 module build, unless
   
   If we ignore the figures right - highly depends your build, tomee 
container/openejb-core module for ex, it is 14s -> 4s (1 module so if you do 
the math you almost save 1h for your example ;)).
   
   > there are inter-module dependencies, as in that case this feature would 
work only on "root" modules?
   
   Kind of, "magic" happens there 
https://github.com/apache/maven-compiler-plugin/blob/master/src/main/java/org/apache/maven/plugin/compiler/AbstractCompilerMojo.java#L897
 and agree the rule can be enhanced to better manage multi-reactor builds, can 
be a great enhancement/PR to do.


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