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  1. Maven
  2. MNG-7991

refactor "aggregator" goal feature

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    Description

      aggregation was added in early Maven 2 stages with MNG-250, not really documented AFAIK

      there are multiple shortcomings found over time:

      • discrepancy between CLI and lifecycle use: CLI skips execution in sub-modules, but not lifecycle
      • forked lifecycle execution vs second execution in modules
      • sometimes, instead of executing aggregate goal before building modules, it would be useful to execute aggregate after building modules (to aggregate some results built in each module)
        notice that this looks also like the need for "execute at end" as found in install/deploy

      we probably need to better document what aggregate currently does and define what should be the target: perhaps refactoring will require new mechanisms that we won't call aggregator, like MNG-5665...

      edge case: aggregating reports for maven-site-plugin (launched by maven-reporting-exec, hence quite independent from associated reporting goals even if we expect some consistency between site reports and reporting goals)

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          contains

          Bug - A problem which impairs or prevents the functions of the product. MNG-2184 Possible problem with @aggregator and forked lifecycles

          • Major - Major loss of function.
          • Open
          incorporates

          Improvement - An improvement or enhancement to an existing feature or task. MNG-6336 Aggregator Mojo should be executed only once even when part of the lifecycle

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open
          is caused by

          New Feature - A new feature of the product, which has yet to be developed. MNG-250 make aggregation feasible

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. MNG-7900 wrapper lifecycle in multi module project should be executed only in root module

          • Major - Major loss of function.
          • Open
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MNG-5665 Advanced Lifecycle Handling

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MNG-7163 Aggregating Mojo re-executes goals for child modules that are already executed

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MNG-7672 Aggregate goals executed in a submodule forks the whole reactor

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. MNG-2180 Allow aggregation mojos to access plugin configurations

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. MNG-4504 Disallowing all aggregator bindings to any lifecycle is too broad

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

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              Unassigned Unassigned
              hboutemy Herve Boutemy
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                Updated: