Re: Changing schema on multiple nodes while they are isolated

2015-10-05 Thread Clint Martin
No problem, glad to help. I'd love to see how it works out for you. Clint On Oct 5, 2015 8:12 AM, "Stephen Baynes" wrote: > Clint Martin's idea of each node creating its own keyspace, but then > deciding which to use depending on the state of the cluster is really > interesting. I am going to ex

Re: Changing schema on multiple nodes while they are isolated

2015-10-05 Thread Stephen Baynes
Clint Martin's idea of each node creating its own keyspace, but then deciding which to use depending on the state of the cluster is really interesting. I am going to explore that in more detail. Thanks for the good idea. On 3 October 2015 at 00:03, Clint Martin < clintlmar...@coolfiretechnologies

RE: Changing schema on multiple nodes while they are isolated

2015-10-05 Thread Jacques-Henri Berthemet
conflicts it will be resolved on the basis of the row timestamp. -- Jacques-Henri Berthemet From: Stephen Baynes [mailto:stephen.bay...@smoothwall.net] Sent: lundi 5 octobre 2015 11:00 To: user@cassandra.apache.org Subject: Re: Changing schema on multiple nodes while they are isolated > Why do

Re: Changing schema on multiple nodes while they are isolated

2015-10-05 Thread Stephen Baynes
a automatically. > > > > *--* > > *Jacques-Henri Berthemet* > > > > *From:* Stephen Baynes [mailto:stephen.bay...@smoothwall.net] > *Sent:* vendredi 2 octobre 2015 18:08 > *To:* user@cassandra.apache.org > *Subject:* Re: Changing schema on multiple nodes while they are i

Re: Changing schema on multiple nodes while they are isolated

2015-10-02 Thread Clint Martin
You could use a two key space method. At startup, wait some time for the node to join the cluster. the first time the app starts, you can be in one of three states: The happiest state is that you succeed in joining a cluster. in this case you will get replicated the cluster's keyspace and can s

Re: Changing schema on multiple nodes while they are isolated

2015-10-02 Thread Robert Coli
On Fri, Oct 2, 2015 at 9:08 AM, Stephen Baynes < stephen.bay...@smoothwall.net> wrote: > Will need to do some thinking about this. I wonder about shiping a backup > of a good system keyspace and restore it on each node before it starts for > the first time - but will that end up with each node hav

RE: Changing schema on multiple nodes while they are isolated

2015-10-02 Thread Jacques-Henri Berthemet
multiple nodes while they are isolated Hi Jacques-Henri You are right - serious trouble. I managed some more testing and it does not repair or share any data. In the logs I see lots of: WARN [MessagingService-Incoming-/10.50.16.214<http://10.50.16.214>] 2015-10-02 16:52:

Re: Changing schema on multiple nodes while they are isolated

2015-10-02 Thread Stephen Baynes
Hi Jacques-Henri You are right - serious trouble. I managed some more testing and it does not repair or share any data. In the logs I see lots of: WARN [MessagingService-Incoming-/10.50.16.214] 2015-10-02 16:52:36,810 IncomingTcpConnection.java:100 - UnknownColumnFamilyException reading from soc

RE: Changing schema on multiple nodes while they are isolated

2015-10-02 Thread Jacques-Henri Berthemet
Hi Stephen, If you manage to create tables on each node while node A and B are separated, you’ll get into troubles when they will reconnect again. I had the case previously and Cassandra complained that tables with same names but different ids were present in the keyspace. I don’t know if there