Simple commit builds are failing often https://builds.apache.org/job/Hadoop-trunk-Commit/
Many trunk builds are failing on H19. "protoc version is 'libprotoc 2.6.1', expected version is '2.5.0' " On H4, a cmake version problem was seen. The commit builds don't seem to be running in a docker container (i.e. non-yetus env), so the env is not consistent. What will it take to fix this? Kihwal
