-----Original Message-----
From: "Carlos Santana"<csantan...@gmail.com>
To: <dev@openwhisk.apache.org>;
Sent: 2018-02-14 (星期三) 02:57:05
Subject: Re: Hot standby controller

On Tue, Feb 13, 2018 at 8:05 AM Christian Bickel <apa...@cbickel.de> wrote:

> Hi,
> some time ago, we started working on the scale out of the controllers.
> One of our first steps was to deploy two controllers, but use the second
> one as hot standby controller. At this time, this was an important step,
> because we had to handle cache-invalidation first and solve
> Load-balancing-issues.
> In the meantime all these issues are solved, and the default is that all
> controllers are used round robin for months now.
> We added a flag if the controllers should be used round robin or the
> second as hot standby. This flag is set to "use all controllers round
> robin" for months now.
> In my opinion, we don't need the hot standby ability anymore.
> Does anyone has another opinion?
> If not, I'll go forward with the following PR
> https://github.com/apache/incubator-openwhisk/pull/3266 (
> https://github.com/apache/incubator-openwhisk/pull/3266) and let it merge.
> Greetings
> Christian Bickel

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