Re: Bootstrapping data from Cassandra 2.2.5 datacenter to 3.0.8 datacenter fails because of streaming errors

As Johathan said, you need to upgrade cassandra directly and use "nodetool upgradesstables". Datastax has an excellent resource on upgrading cassandra https://docs.datastax.com/en/latest-upgrade/upgrade/cassandra/upgdCassandra.html, specifically https://docs.datastax.com/en/latest-upgrade/upgrade/c

Re: Motivation for a DHT ring

With fault tolerance and reliability, it also gives a faster lookup mechanism across various nodes in a cluster. Amazon's dynamo paper might be a better read to understand the reasoning behind a DHT based system: http://www.allthingsdistributed.com/files/amazon-dynamo-sosp2007.pdf On Wed, Jun 29,

Re: Cassandra vs Elasticsearch.

I have also written a prototype ES-Cassandra river: https://github.com/eBay/cassandra-river Never tested it in prod, might need improvements. Thanks, -Utkarsh On Sat, May 3, 2014 at 1:37 PM, Tim Dunphy wrote: > I'd like to try your ElasticSearch / Cassandra driver as well. Could you > post a l

Re: Cassandra 2.0 new features ?

Jonathan Ellis has covered it briefly in this presentation here (slide 51): http://www.slideshare.net/planetcassandra/nyc-jonathan-ellis-keynote-cassandra-12-20 They are: 1. Eager retries 2. Improved compaction 3. Triggers 4. CAS (Compare-and-set) 5. More-efficient repair Thanks,

Re: How to find total number of rows in Cassandra databaase?

etween CLI and CQL? > > > > On Sun, Apr 21, 2013 at 1:30 PM, Utkarsh Sengar wrote: > >> Using cqlsh you can do: >> >> SELECT COUNT(*) FROM columnfamily LIMIT 5000; >> >> Does that help? >> >> Read more: http://www.datastax.com/docs/1.0/referenc

Re: How to find total number of rows in Cassandra databaase?

Using cqlsh you can do: SELECT COUNT(*) FROM columnfamily LIMIT 5000; Does that help? Read more: http://www.datastax.com/docs/1.0/references/cql/SELECT Thanks, -Utkarsh On Sun, Apr 21, 2013 at 1:04 PM, Techy Teck wrote: > I have inserted 1000 rows in Cassandra database. Now I am trying to

Reading data in bulk from cassandra for indexing in Elastic search

Hello, I am trying to implement an indexer for a column family in cassandra (cluster of 4 nodes) using elastic search. There is a river pluginwhich I am writing which retrieves data from cassandra and throws to elastic search. It is triggered on