Re: Execute an external program

2018-03-28 Thread Earl Lapus
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?

Re: Execute an external program

2018-03-28 Thread Earl Lapus
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

Execute an external program

2018-03-27 Thread Earl Lapus
Hi All, I may be over the edge here, but is there a way to execute an external program if a new row is added or if an existing row is updated on a table? Cheers, Earl -- There are seven words in this sentence.

Re: Server errors during insert

2017-12-09 Thread Earl Lapus
Hi Jeff, On Sun, Dec 10, 2017 at 7:52 AM, Jeff Jirsa wrote: > That looks like a real problem, but it's not immediately clear to me what > it is. > > It's possible that it's a genuine disk failure (do you see other signs of > that disk having read/write failures?), or more

Server errors during insert

2017-12-09 Thread Earl Lapus
Hi, I have python program that inserts data into a Cassandra server, it runs without reporting any problems and all inserts are successful. However, I get recurring errors logs in the server every time I run my python program for inserting data (see sample errors below). So, should I ignore

Cassandra Python Driver - User Defined Functions

2017-08-30 Thread Earl Lapus
Hi, I'm learning to use the Python Driver API as documented here: https://datastax.github.io/python-driver/api/index.html The database that I am working on has a user define function, similar to what is described here: http://batey.info/cassandra-aggregates-min-max-avg-group.html Is there a way