LOCAL_QUORUM without a replica in current data center

Hi, How does LOCAL_QUORUM read/write behave when the data center on which query is executed does not have a replica of the keyspace? Does it result in an error or can it be configured to do LOCAL_QUORUM on the "nearest" data center (as depicted by the dynamic snitch) which has the replicas ? We

Re: LOCAL_QUORUM without a replica in current data center

Sorry for the spam - but I wanted to double check if anyone had experience with such a scenario. Thanks. On Sun, Aug 17, 2014 at 7:11 PM, Viswanathan Ramachandran < vish.ramachand...@gmail.com> wrote: > Hi, > > How does LOCAL_QUORUM read/write behave when the data center on w

Re: Scala driver

I haven't used this scala driver, but may possibly explore soon. https://github.com/websudosuk/phantom https://websudosuk.github.io/phantom/ Mentioned at at: http://planetcassandra.org/client-drivers-tools/#Scala http://www.datastax.com/download#dl-community-drivers On Mon, Sep 1, 2014 at 10:

Consistency Level for Atomic Batches

Is consistency level honored for batch statements? If I have 100 insert/update statements in my batch and use LOCAL_QUORUM consistency, will the control from coordinator return only after a local quorum update has been done for all the 100 statements? Or is it different ? Thanks Vish

Re: Consistency Level for Atomic Batches

at 8:00 AM, Viswanathan Ramachandran < vish.ramachand...@gmail.com> wrote: > Is consistency level honored for batch statements? > > If I have 100 insert/update statements in my batch and use LOCAL_QUORUM > consistency, will the control from coordinator return only after a local &

Writing to multiple tables

Hi, Are Cassandra Batch statements http://www.datastax.com/documentation/cql/3.1/cql/cql_reference/batch_r.html the recommended way for updating same information in multiple tables? For example if I have the following tables: person_by_dob person_by_ssn person_by_lastname Then addition/modifi

Is nodetool cleanup necessary on nodes of different data center when new node is added

I plan to have a multi data center Cassandra 2 setup with 2-4 nodes per data center and several 10s of data centers. We have keyspaces replicated on a certain number of nodes on *each* data center. Essentially, each data center has a logical ring that covers all token ranges. We have a vnode based

Nodetool Repair questions

Some questions on nodetool repair. 1. This tool repairs inconsistencies across replicas of the row. Since latest update always wins, I dont see inconsistencies other than ones resulting from the combination of deletes, tombstones, and crashed nodes. Technically, if data is never deleted from cassa

Re: Nodetool Repair questions

upper limit on the >> number of data centers/nodes? > > > Could you expand on why you believe there would be an upper limit of > dc/nodes due to running repairs? > > > Mark > > > On Tue, Aug 12, 2014 at 10:06 PM, Viswanathan Ramachandran < > vish.ramachand..

Re: Nodetool Repair questions

ency and you don't > delete data. > 2.Performance depends on size of data each node has. It's very difficult > to predict. It may take days. > > Thank you, > Andrey > > > > On Tue, Aug 12, 2014 at 2:06 PM, Viswanathan Ramachandran < > vish.ramachan