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From Kevin Burton <bur...@spinn3r.com>
Subject Re: Maximum node decommission // bootstrap at once.
Date Tue, 06 Oct 2015 20:29:50 GMT
I'm not sure which is faster/easier.  Just joining one box at a time and
then decommissioning or using replace_address.

this stuff is always something you do rarely and then more complex than it
needs to be.

This complicates long term migration too.  Having to have gigabit is
somewhat of a problem in that you might now actually have it where you're
going.

We're migrating from Washington, DC to Germany so we have to change TCP
send/receive buffers to get decent bandwidth.

But I think we can do this at 1Gb per so per box.


On Tue, Oct 6, 2015 at 12:48 PM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Tue, Oct 6, 2015 at 12:32 PM, Kevin Burton <burton@spinn3r.com> wrote:
>
>> How many nodes can we bootstrap at once?  How many can we decommission?
>>
>
> short answer : 1 node can join or part at simultaneously
>
> longer answer : https://issues.apache.org/jira/browse/CASSANDRA-2434 /
> https://issues.apache.org/jira/browse/CASSANDRA-7069 /
> -Dconsistent.rangemovement
>
> Have you considered using replace_address to replace your existing 13
> nodes, at which point you just have to join 17 more?
>
> =Rob
>
>



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