Github user mmiklavc commented on the issue:
https://github.com/apache/incubator-metron/pull/538
The .m2 cache is an extension of the local target directories and you're
correct that upping the version to 0.4.0 caused the initial issue with missing
artifacts. Regardless of maven placing artifacts in the cache, what still
doesn't make sense to me is why Maven doesn't seem to be ordering the reactor
properly with a multi-module project with the parallel build setting enabled. I
tried validation on multiple configurations with and without parallel settings.
The non-parallel build sets up the order as expected whereas the parallel build
doesn't seem to honor the dependency hierarchy fully. It would be great to know
why this is so we can run the build with whatever profile or install/package
command we choose, with a single command, in parallel.
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