larroy commented on issue #11226: Fix build.py when CCACHE_DIR is set. URL: https://github.com/apache/incubator-mxnet/pull/11226#issuecomment-396436042 @marcoabreu check it out for yourself, the caches are being rebuilt all the time: http://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/incubator-mxnet/detail/PR-11220/7/pipeline I re-enabled cache-from in this PR and it's rebuilding everything as it's happening to me locally. The behaviour I expect is with this flag disabled. I don't think this flag is documented well in docker, so I can't tell for sure we need it, but since you introduced it I never hit the cache.
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