Re: custom validation before replication

2017-11-16 Thread Jeff Jirsa
What you're wanting really isn't supported/available, but you could probably extend cassandra to do this with some work. Doing this at replication time is the wrong point, though - you want to do it before the mutation is applied locally, so triggers are still the closest to the right point as

Re: custom validation before replication

2017-11-16 Thread Jon Haddad
Looks like you’ve got this thread going on the user & dev ML. This list is the dev one, and is meant for discussion of the Cassandra project. Would everyone mind replying to the thread of the same name on the user list instead? > On Nov 16, 2017, at 1:36 PM, Abdelkrim Fitouri

Re: custom validation before replication

2017-11-16 Thread Abdelkrim Fitouri
ok please find bellow an example: Lets suppose that i have a cassandra cluster of 4 nodes / one DC / replication factor = 4, So in this architecture i have on full copy of the data on each node. Imagine now that one node have been hacked and in some way with full access to cqlsh session, if data

Re: custom validation before replication

2017-11-16 Thread Nate McCall
On Fri, Nov 17, 2017 at 9:11 AM, Abdelkrim Fitouri wrote: > Trigger does not resolve my problem because it is not a format validation > issue but an integrity constraint ... > > My purpose is to check data integrity before replication, by returning an > error and killing the

RE: custom validation before replication

2017-11-16 Thread Abdelkrim Fitouri
g/doc/latest/cql/security.html Regards, -- Jacques-Henri Berthemet -Original Message- From: Abdelkrim Fitouri [mailto:abdou@gmail.com] Sent: jeudi 16 novembre 2017 18:31 To: dev@cassandra.apache.org Subject: custom validation before replication Hi, I have some security constraint on a pro

Re: custom validation before replication

2017-11-16 Thread Jeff Jirsa
Going to hate myself for this, but check out the trigger interface. https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/triggers/ITrigger.java Pay attention to the note that says the API is in beta and subject to change. It's had that note for many years, which

RE: custom validation before replication

2017-11-16 Thread Jacques-Henri Berthemet
16 novembre 2017 18:31 To: dev@cassandra.apache.org Subject: custom validation before replication Hi, I have some security constraint on a project, and i need to validate or unvalidate changes made on a keyspace via cql or via an other ways before replication. for example in the case

custom validation before replication

2017-11-16 Thread Abdelkrim Fitouri
Hi, I have some security constraint on a project, and i need to validate or unvalidate changes made on a keyspace via cql or via an other ways before replication. for example in the case of multinode cluster with replication, if data was changed locally using cqlsh, data will be replicated (that