To clarify that statement a little more,

Speaking only for myself as an op, I don't want to support yet one more 
snowflake in a sea of snowflakes, that works differently then all the rest, 
without a very good reason.

Java has its own set of issues associated with the JVM. Care, and feeding sorts 
of things. If we are to invest time/money/people in learning how to properly 
maintain it, its easier to justify if its not just a one off for just DLM,

So I wouldn't go so far as to say we're vehemently opposed to java, just that 
DLM on its own is probably not a strong enough feature all on its own to 
justify requiring pulling in java. Its been only a very recent thing that you 
could convince folks that DLM was needed at all. So either make java optional, 
or find some other use cases that needs java badly enough that you can make 
java a required component. I suspect some day searchlight might be compelling 
enough for that, but not today.

As for the default, the default should be good reference. if most sites would 
run with etc or something else since java isn't needed, then don't default 
zookeeper on.

Thanks,
Kevin 

________________________________________
From: Ed Leafe [e...@leafe.com]
Sent: Wednesday, November 04, 2015 12:02 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [all] Outcome of distributed lock manager  
discussion @ the summit

On Nov 3, 2015, at 6:45 AM, Davanum Srinivas <dava...@gmail.com> wrote:
>
> Here's a Devstack review for zookeeper in support of this initiative:
>
> https://review.openstack.org/241040
>
> Thanks,
> Dims

I thought that the operators at that session made it very clear that they would 
*not* run any Java applications, and that if OpenStack required a Java app to 
run, they would no longer use it.

I like the idea of using Zookeeper as the DLM, but I don't think it should be 
set up as a default, even for devstack, given the vehement opposition expressed.


-- Ed Leafe






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