Hi Bigtop: I'm trying to build Hadoop on ARM64 platform and I've meet some problem related to protobuf 2.5.0 seems it does not build on ARM64, and there is an issue in Hadoop about this: https://issues.apache.org/jira/browse/HADOOP-13363 which has not yet been solved. But I noticed that Bigtop has successfuly built Hadoop 2.8.5 on ARM64, eg. https://ci.bigtop.apache.org/view/Packages/job/Bigtop-trunk-packages/COMPONENTS=hadoop,OS=ubuntu-16.04-aarch64/ so I'm quite curious how bigtop solved this problem?
Thanks in advance Kevin Zheng
