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  1. Maven
  2. MNG-4706

Multithreaded building can create bad files for downloaded artifacts in local repository

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      Within a parallel build, modules A and B can start at the same time and decide at the same time that they need to download artifact X. Since X is not available locally, both can start download of X. Both will download X and both will try to write the file for X to disk.

      On Windows platforms, one of them can fail with file locking problems. On Unixes the contents of the written file can be non-deterministic.

      This issue is related to MNG-2802 in the sense that it can create a corrupted artifact file in the local repository, and it can happen to ANY file written. But as opposed to MNG-2802 the synhronization needed to fix this issue is basically only within a single running maven process, so regular java mechanisms can apply, whereas MNG-2802 probably needs to use a totally different solution space.

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              • Assignee:
                michael-o Michael Osipov
                Reporter:
                krosenvold Kristian Rosenvold
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                • Created:
                  Updated:
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