David,
How long has the cluster been operating?
How long has the problem been occurring?
Kenneth Brotman
From: Jeff Jirsa [mailto:jji...@gmail.com]
Sent: Tuesday, March 27, 2018 7:00 PM
To: Xiangfei Ni
Cc: user@cassandra.apache.org
Subject: Re: 答复: 答复: A node down every day in a 6 nod
Hi Kenneth,
The cluster has been running for 4 months,
The problem occurred from last week,
Best Regards,
倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811|Tel: + 86 27 5024 2516
发件人: Kennet
Was any change to hardware done around the time the problem started ?
Was any change to the client software done around the time the problem started?
Was any change to the database schema done around the time the problem started?
Kenneth Brotman
From: Xiangfei Ni [mailto:xiangfei...@cm-dt
David,
Did you figure out what to do about the data model problem? It could be that
your data files finally grow to the point that the data model problem caused
the Java heap space issue – in which case everything is actually working as
it’s supposed to; You just have to fix the data model
Yes ,we discussed and plan to figured out the data model issue and upgrade to
3.11.3 version.
Best Regards,
倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811|Tel: + 86 27 5024 2516
发件人: Kenneth Bro
If you think that will fix the problem, maybe you could add a little more
memory to each machine as a short term fix.
From: Xiangfei Ni [mailto:xiangfei...@cm-dt.com]
Sent: Wednesday, March 28, 2018 5:24 AM
To: user@cassandra.apache.org
Subject: 答复: 答复: 答复: A node down every day in a 6 nodes
Hello Anumod,
If you are using systemd you can use this one.
You may want to hardcode the limitNOFILE value if you don't have a new enough
version of systemd in order to avoid this issue
https://github.com/systemd/systemd/issues/6559
(https://link.getmailspring.com/link/1522241261.local-0405fd0
On Wed, Mar 28, 2018 at 8:31 AM, Christophe Schmitz <
christo...@instaclustr.com> wrote:
>
> You probably want to check Cassandra triggers:
> http://cassandra.apache.org/doc/latest/cql/triggers.html
> You can write arbitrary code that is called for the DML against your table.
>
>
>
Thanks, I'll c
Properly Sizing Your Heap to Prevent OutOfMemoryErrors
https://support.datastax.com/hc/en-us/articles/204225929-Properly-Sizing-Your-Heap-to-Prevent-OutOfMemoryErrors
From: Kenneth Brotman [mailto:kenbrot...@yahoo.com.INVALID]
Sent: Wednesday, March 28, 2018 5:35 AM
To: user@cassandra.apac
On Wed, Mar 28, 2018 at 8:39 AM, Jeff Jirsa wrote:
> CDC may also work for newer versions, but it’ll happen after the mutation
> is applied
>
> --
> Jeff Jirsa
>
>
"after the mutation is applied" means after the query is executed?
Thanks for the answer Rahul.
I actually wanted to know that if there is any other certification authority
better than Datastax ? or is it the only one as of now ?
From: Rahul Singh [mailto:rahul.xavier.si...@gmail.com]
Sent: Saturday, March 24, 2018 3:38 PM
To: user@cassandra.apache.org
Subject:
"it seems that we still need to keep bootstrap false?"
Could you shed some light on what would happen if the auto_bootstrap is
removed (or set to true as the default value) in the seed nodes of the
newly added DC?
What do you have in the seeds param of the new DC nodes (cassandra.yaml)?
Do you
It certainly depends on the corporation. I've seen some that value
certificates, and some others that do not bother with them at all. It also
depends on the certificate as well. Companies don't care that much about
Oracle Java Certifications, but they tend to take SAP certificates more
seriousl
Hi ...
I'm finding anecdotal evidence on the internet that we are able to upgrade
2.2.8 to latest 3.11.2. Post below indicates that you can upgrade to latest
3.x from 2.1.9 because 3.x no longer requires 'structured upgrade path'.
I just want to confirm that such upgrade is supported. If yes, wher
You can perform an upgrade from 2.2.x straight to 3.11.2, but the op
suggests adding nodes in 3.10 to a cluster that runs 2.2.8, which is why
Jeff says it won't work.
I see no reason to upgrade to 3.10 and not 3.11.2 by the way.
On Wed, Mar 28, 2018 at 5:10 PM Fred Habash wrote:
> Hi ...
> I'm
Thank you.
In regards to my second inquiry, as we plan for C* upgrades, I did not find the
NEWS.txt always to be telling of possible upgrade paths. Is there a rule of
thumb or may be an official reference for upgrade paths?
Thank you
From: Alexander Dejanovski
Sent: Wednesda
Hi,
Did anyone used Cassandra in medical industry since FDA enforces CFR 21 (part
11) compliance ?
Regards,
Sudhakar
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