Re: are asynchronous schema updates possible ?
+1 What kinds of problems? Cassandra uses identifier internally for each CF. If you concurrently create CFs, you might end up with either two different CFs having the same identifier or the same CF having two different identifiers (on two different nodes). That in turn might likely trigger a number of exceptions server side and could be rather painful to fix. So do not do it. Not until 1.2 at least. -- Sylvain Thanks, Dean From: Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Date: Tuesday, September 4, 2012 1:12 PM To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Subject: Re: are asynchronous schema updates possible ? what kind of problems? nodes do not agree about schema exception on later node ? something worse? 2012/9/5 Sylvain Lebresne sylv...@datastax.commailto:sylv...@datastax.com On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com wrote: Is it ok multiple servers will create/update the same CF at once ? I'm looking into dynamic schema update during application deploy/update. As said above, it is ok for update the same CF concurrently in 1.1 but *not* for creation (if you create CF concurrently, whether that is the same CF or not, you might have problem). The last part will be fixed in 1.2 however. -- Sylvain вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.commailto:aa...@thelastpickle.com wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.com wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
Is it ok multiple servers will create/update the same CF at once ? I'm looking into dynamic schema update during application deploy/update. вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.comjavascript:; wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.comjavascript:; wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин chipits...@gmail.com wrote: Is it ok multiple servers will create/update the same CF at once ? I'm looking into dynamic schema update during application deploy/update. As said above, it is ok for update the same CF concurrently in 1.1 but *not* for creation (if you create CF concurrently, whether that is the same CF or not, you might have problem). The last part will be fixed in 1.2 however. -- Sylvain вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.com wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
what kind of problems? nodes do not agree about schema exception on later node ? something worse? 2012/9/5 Sylvain Lebresne sylv...@datastax.com On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин chipits...@gmail.com wrote: Is it ok multiple servers will create/update the same CF at once ? I'm looking into dynamic schema update during application deploy/update. As said above, it is ok for update the same CF concurrently in 1.1 but *not* for creation (if you create CF concurrently, whether that is the same CF or not, you might have problem). The last part will be fixed in 1.2 however. -- Sylvain вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.com wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
+1 What kinds of problems? Thanks, Dean From: Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Date: Tuesday, September 4, 2012 1:12 PM To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Subject: Re: are asynchronous schema updates possible ? what kind of problems? nodes do not agree about schema exception on later node ? something worse? 2012/9/5 Sylvain Lebresne sylv...@datastax.commailto:sylv...@datastax.com On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com wrote: Is it ok multiple servers will create/update the same CF at once ? I'm looking into dynamic schema update during application deploy/update. As said above, it is ok for update the same CF concurrently in 1.1 but *not* for creation (if you create CF concurrently, whether that is the same CF or not, you might have problem). The last part will be fixed in 1.2 however. -- Sylvain вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: To add to Aaron response, you can update a CF concurrently in 1.1 already. However, you cannot create multiple CF concurrently just yet, but that will be fixed in 1.2. -- Sylvain On Sun, Aug 26, 2012 at 11:04 PM, aaron morton aa...@thelastpickle.commailto:aa...@thelastpickle.com wrote: Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.commailto:chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
Re: are asynchronous schema updates possible ?
Concurrent schema changes are coming in 1.2. I could not find a single issue that covered it, that may be my bad search fu. The issues for 1.2 are here https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 24/08/2012, at 7:06 PM, Илья Шипицин chipits...@gmail.com wrote: Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
are asynchronous schema updates possible ?
Hello! we are looking into concurent schema updates (when multiple instances of application create CFs at once. at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket 1391, it is said it is still open. however, in jura is said 1.1.0 is fixed can schema be updated asynchrously on 1.1.x ? or not ? if multiple server create the same CF ? Cheers, Ilya Shipitsin
