Changing snitch from PropertyFile to Gossip

2016-04-24 Thread AJ
Is it possible to do this without down time i.e. run in mixed mode while doing a rolling upgrade?

Re: Changing snitch from PropertyFile to Gossip

2016-04-24 Thread Carlos Rolo
As long as the topology doesn't change, yes. Repair once you finish. Em 24/04/2016 13:23, "AJ" escreveu: > Is it possible to do this without down time i.e. run in mixed mode while > doing a rolling upgrade? -- --

Publishing from cassandra

2016-04-24 Thread Alexander Orr
Hi, I'm wondering if someone could help me, I'd like to use cassandra to store data and publish this on dowstream to another database (kdb if anyone is interested). Essentially I'd like to be able to run a function or operation on cassandra from an upstream process that would insert to table and p

Re: Publishing from cassandra

2016-04-24 Thread Laing, Michael
You could take a look at, or follow: https://issues.apache.org/jira/browse/CASSANDRA-8844 On Sun, Apr 24, 2016 at 10:51 AM, Alexander Orr wrote: > Hi, > > I'm wondering if someone could help me, I'd like to use cassandra to store > data and publish this on dowstream to another database (kdb if a

Re: Efficient Paging Option in Wide Rows

2016-04-24 Thread Carlos Alonso
Hi Anuj, That's a very good question and I'd like to hear an answer from anyone who can give a detailed answer, but in the mean time I'll try to give my two cents. First of all I think I'd rather split all the values into different partition keys for two reasons: 1.- If you're sure you're accessi

Re: Efficient Paging Option in Wide Rows

2016-04-24 Thread Clint Martin
I tend to agree with Carlos. Having multiple row keys and parallelizing your queries will tend to result in faster responses. Keeping positions relatively small will also help your cluster to manage your data more efficiently also resulting in better performance. One thing I would recommend is to

RE: Publishing from cassandra

2016-04-24 Thread Ashic Mahtab
Hi Alex,Cassandra Triggers may help. They come with their drawbacks, but they can be an option for something like this: https://docs.datastax.com/en/cql/3.1/cql/cql_reference/trigger_r.html -Ashic. Date: Sun, 24 Apr 2016 12:05:31 -0400 Subject: Re: Publishing from cassandra From: michael.la...@ny

Re: Publishing from cassandra

2016-04-24 Thread Clint Martin
I would probably use a messaging layer to perform this operation. Kafka works very well, but depending on your throughput requirements almost anything should work. The idea is to publish your mutation requests to the messaging layer and allow multiple consumers to process those mutation requests i