Re: Are Materialized views persisted on disk?

2016-12-13 Thread Carl Yeksigian
Yes, they are stored on disk like a normal table. On Tue, Dec 13, 2016 at 2:31 PM, Kant Kodali wrote: > Are Materialized views persisted on disk? sorry for the naive question. >

Re: Spark-Cassandra connector

2016-06-22 Thread Carl Yeksigian
Hi Joaquin, Your best bet for a response will be on the spark-cassandra-connector mailing list: https://groups.google.com/a/lists.datastax.com/forum/#!forum/spark-connector-user Hope you find your answer. -Carl On Wed, Jun 22, 2016 at 4:58 AM, Joaquin Alzola wrote: > Hi List > > > > I am tryi

Re: Handling uncommitted paxos state

2016-02-25 Thread Carl Yeksigian
The paxos state is written to a system table (system.paxos) on each of the paxos coordinators, so it goes through the normal write path, including persisting to the log and being stored in a memtable until being flushed to disk. As such, the state can survive restarts. These states are not treated

Re: compaction_throughput_mb_per_sec

2016-01-04 Thread Carl Yeksigian
This is set in the cassandra.yaml on each node independently; it doesn't have to be same cluster-wide. On Mon, Jan 4, 2016 at 3:59 PM, Ken Hancock wrote: > I was surprised the other day to discover that this was a cluster-wide > setting. Why does that make sense? > > In a heterogeneous cassand

Re: C# CQL Driver - Each Session maintains its own HostConnectionPool and Host connections

2015-12-17 Thread Carl Yeksigian
Hi Soto, You are going to have more luck using the C# driver list instead of the cassandra-user list. https://groups.google.com/a/lists.datastax.com/forum/#!forum/csharp-driver-user -Carl On Thu, Dec 17, 2015 at 3:01 PM, Sotirios Delimanolis wrote: > Hey, > > I wanted to ask here before I ope

Re: Materialized View: can the view's partition key change due to changes to the underlying table?

2015-12-15 Thread Carl Yeksigian
In the case of an update to the source table where data is changed, a tombstone will be generated for the old value and an insert will be generated for the new value. This happens serially for the source partition, so if there are multiple updates to the same partition, a tombstone will be generate

Re: RDD partitions per executor in Cassandra Spark Connector

2015-03-03 Thread Carl Yeksigian
These questions would be better addressed to the Spark Cassandra Connector mailing list, which can be found here: https://github.com/datastax/spark-cassandra-connector/#community Thanks, Carl On Tue, Mar 3, 2015 at 4:42 AM, Pavel Velikhov wrote: > Hi, is there a paper or a document where one ca