Github user jameslamb commented on the issue:
https://github.com/apache/metron/pull/1091
I THINK I found the issue with my original PR. The command to register the
scl repo doesn't get picked up by `yum` until it exits.
**this fails to find devtoolset-4**
```
yum install -y \
centos-release-scl \
devtoolset-4-gcc-c++
```
**this finds it**
```
yum install -y centos-release-scl \
&& yum install -y devtoolset-4-gcc-c++
```
Testing locally now, will update later tonight. I am testing locally by
walking through the build instructions in each README in the
`metron-deployment/packaging/docker` sub-folders. I've never used vagrant and
don't actually know how to do "Have you verified the basic functionality of the
build by building and running locally with Vagrant full-dev environment or the
equivalent?"
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