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From Henry Robinson <he...@apache.org>
Subject Heads-up - manual toolchain update required soon
Date Mon, 08 May 2017 22:21:24 GMT
I'm about to start the process of getting IMPALA-5174 committed to the
toolchain. This patch changes gflags to allow 'hidden' flags that won't
show up on /varz etc.

The toolchain glog has a dependency on gflags, meaning that the installed
glog library needs to be built against the installed gflag library. So when
the new gflag gets pulled in, you will need the new glog as well.

However, the toolchain scripts won't detect that anything has changed for
glog, because there's no version number change (changing the toolchain
build ID doesn't cause the toolchain scripts to invalidate dependencies).

Rather than introduce a spurious version bump with an empty patch file or
something, I figured in this case it's easiest to ask developers to
manually delete their local glog, and then bin/bootstrap_toolchain.py will
download the most recent glog that's built against gflag. This is a
one-time thing.

I'll send out instructions about how to do this when the toolchain is
updated.

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