You have some (many?) misunderstanding of how Cassandra works, and
therefore many of your questions are hard to answer without educating
you first and make you asking different but related and relevant
questions instead. That's why you aren't getting any answer from us. We
are not paid to do that, nor do we have that much free time to teach you
about the fundamentals of Cassandra.
For instance, nobody has ever suggested that multiple racks in a DC is a
requirement. Both Jeff and I were keep telling you that it's a trade-off
between consistency and availability in the CAP theorem. But somehow,
you convinced yourself that's a requirement.
You really should systematically learn about Cassandra before planning
to use it in production. The same way you would systematically learn
about air plane before trying to fly one. Once you are in the air, some
mistakes are very hard if not impossible to fix.
On 12/07/2022 16:00, Marc Hoppins wrote:
I posted system log data, GC log data, debug log data, nodetool data.
I believe I had described the situation more than adequately.
Yesterday, I was asking what I assumed to be reasonable questions
regarding the method for adding new nodes to a new rack.
Forgive me if it sounds unreasonable but I asked the same question
again: your response regarding replication suggests that multiple
racks in a datacentre is ALWAYS going to be the case when setting up a
Cassandra cluster. Therefore, I can only assume that when setting up a
new cluster there absolutely MUST be more than one rack. The question
I was asking yesterday regarding adding a new nodes in a new rack has
never been adequately answered here and the only information I can
find elsewhere clearly states that it is not recommended to add more
than one new node at a time to maintain data/token consistency.
So how is it possible to add new hardware when one-at-a-time will
absolutely overload the first node added? That seems like a
reasonable, general question which anyone considering employing the
software is going to ask.
The reply to suggest that folk head off a pay for a course when there
are ‘pre-sales’ questions is not a practical response as any business
is unlikely to be spending speculative money.
*From:*Jeff Jirsa <jji...@gmail.com>
*Sent:* Tuesday, July 12, 2022 4:43 PM
*To:* cassandra <user@cassandra.apache.org>
*Cc:* Bowen Song <bo...@bso.ng>
*Subject:* Re: Adding nodes
EXTERNAL
On Tue, Jul 12, 2022 at 7:27 AM Marc Hoppins <marc.hopp...@eset.com>
wrote:
I was asking the questions but no one cared to answer.
This is probably a combination of "it is really hard to answer a
question with insufficient data" and your tone. Nobody here gets paid
to help you solve your company's problems except you.
