Re: Installation

Jim, A wide variety of OSes can be used, but Linux is the most popular. You can start here for installation instructions: http://www.datastax.com/documentation/getting_started/doc/getting_started/gsInstallCassandra.html . -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting

Re: Installing Cassandra Multinode on CentOs coming up with exception

at org.apache.cassandra.config.SeedProviderDef.init(SeedProviderDef.java:33) ... 20 more Invalid yaml I am not sure exactly whats making it to throw NullPointer and halt the process. Expert Advice would be appreciated! URGENT! Thanks! -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http

Re: Node bootstrap

insight is appreciated? Ruchir. -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: data type is object when metric instrument using Gauge?

as numeric types instead of object, or other way around for example using metric reporter...etc? Thanks a lot for any suggestion! Best Regard! Mike -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Changes in the Metrics MBean

? Thanks in advance. Regards, Bhavishya Palukurthi -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: How to get rid of stale info in gossip

? Mark On Fri, Jul 25, 2014 at 11:33 AM, Rahul Neelakantan ra...@rahul.be wrote: Is there a way to get rid of stale information that shows up for removed/dead nodes in gossip, without a complete cluster bounce? Rahul Neelakantan -- Patricia Gorla @patriciagorla Consultant Apache

Re: Why is yum pulling in open JDK ?

the latter installs Apache Cassandra 2.0 Cheers, -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Write Failed, COPY on cqlsh with rpc_timeout‏

Sharaf, Do the logs show any errors while you're trying to insert into Cassandra? -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Suggestions for upgrading cassandra

(rolling upgrade) For a change this major, you should set up a test cluster and see if there are any changes after the upgrade. -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Memory issue

On Wed, May 21, 2014 at 12:59 AM, opensaf dev opensaf...@gmail.com wrote: When I run as user cassandra, it starts and runs fine. Why do you want to run Cassandra as a different user? -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http

Re: Filtering on Collections

❘ Zephyr Health 589 Howard St. ❘ San Francisco, CA 94105 m: +1 9176477433 ❘ f: +1 415 520-9288 o: +1 415 529-7649 | s: raj.janakarajan http://www.zephyrhealth.com -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Filtering on Collections

to be a primary key, no? On Mon, May 19, 2014 at 1:54 PM, Patricia Gorla patri...@thelastpickle.com wrote: Raj, Secondary indexes across CQL3 collections were introduced into 2.1 beta1, so will be available in future versions. See https://issues.apache.org/jira/browse/CASSANDRA-4511

Re: Backup procedure

/documentation/cassandra/2.0/cassandra/tools/toolsDrain.html' beforehand to avoid this issue. This makes the node unavailable for writes, flushes the memtables and replays the commitlog. Cheers, -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http

Re: Some questions to adding a new datacenter into cassandra cluster.

node per availability zone, and 3 seed nodes per DC. If you add a new DC into the cluster, the safe route would be to update the seed list across all nodes. Cheers, -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re:

details. Cheers, -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Cassandra slow on PasswordAuthenticator

Bhaskarjya, The latency you're seeing is likely just the cost of using authentication. Cheers, -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Opscenter help?

- Were you running a mixed EL5/EL6 environment? - What exact version of Cassandra were you upgrading from? As for SE, you have to amass a bit of their magic points before you can start to take more actions (tagging, down-voting, etc). Surprisingly good at keeping down spam. -- Patricia Gorla

Re: How to transfer data from Oracle into Cassandra

(not very frequently change) we use for searching to Cassandra. Thnx -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: what tool will create noncql columnfamilies in cassandra 3a

in the next major. How will users adjust the meta data of non cql column families and other cfs that do not fit into the cql model? -- Sorry this was sent from mobile. Will do less grammar and spell check than usual. -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting

Re: Moving from relational to Cassandra, how to handle intra-table relationships?

the data as serialized JSON in its own column of the parent. All thoughts appreciated! Thanks. Les -- Patricia Gorla @patriciagorla Consultant Apache Cassandra Consulting http://www.thelastpickle.com http://thelastpickle.com

Re: Cluster Management

Anthony, We use a number of tools to manage our Cassandra cluster. * Datastax OpsCenter [0] for at a glance information, and trending statistics. You can also run operations through here, though I prefer to use nodetool for any mutative operation. * nodetool for ad hoc status checks, and

Re: CPU Bound Writes

Kanwar, This is because writes are appends to the commit log, which is stored on disk, not memory. The commit log is then flushed to the memtable (in memory), before being written to an sstable on disk. So, most of the actions in sending out a write are writing to disk. Also see: