Re: bulk load problem

What is your yaml setting for rpc and listen server on destination node? Nury Tue, 26 Jun 2012 17:07:49 -0700 от James Pirz : Dear all, I am trying to use "sstableloader" in cassandra 1.1.1, to bulk load some data into a single node cluster. I am running the following command: bin/sst

Re: How to use row caching to enable faster retrieval of rows in Cassandra

You should read this page for settings http://www.datastax.com/dev/blog/caching-in-cassandra-1-1 Basically, you have to set row_cache size in yaml, and create table with caching flags - "all" or " rows_only", but beware that you shouldn't use row cache, if you using wide rows. Tue, 26 Jun 2012

Re: Interpreting system.log MeteredFlusher messages

> , but I do not > understand the remedy to the problem. > Is increasing this variable my only option? There is nothing to be fixed. This is Cassandra flushing data to disk to free memory and checkpoint the commit log. > I see memtables of serialized size of 100-200 MB with estimated live > size

Re: Fat Client Commit Log

Fat clients aren't involved in writes or HH, and I think my previous thought about it having some info in the System KS may be wrong. Can you recreate the issue ? Care to raise a ticket on https://issues.apache.org/jira/browse/CASSANDRA ? Thanks - Aaron Morton Freelance Develo

Re: Interpreting system.log MeteredFlusher messages

On Wed, Jun 27, 2012 at 2:27 PM, aaron morton wrote: > , but I do not > understand the remedy to the problem. > Is increasing this variable my only option? > > There is nothing to be fixed. This is Cassandra flushing data to disk to > free memory and checkpoint the commit log. yes, but it induces

Re: Enable CQL3 from Astyanax

Had a quick look, the current master does not appear to support it. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 26/06/2012, at 7:46 AM, Thierry Templier wrote: > Hello, > > How can I enable CQL3 support in Astyanax? Thanks very much f

Re: repair never finishing 1.0.7

> Setting up a Cassandra ring across NAT ( without a VPN ) is impossible in my > experience. The broadcast_address allows a node to broadcast an address that is different to the ones it's bound to on the local interfaces https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L270

Re: repair never finishing 1.0.7

Aaron, The broadcast_address allows a node to broadcast an address that is different to the ones it's bound to on the local interfaces https://github.com/apache/cassandra/blob/trunk/conf/cassandra.yaml#L270 Yes and thats not where the problem is IMO.. If you broadcast your translated address (

Re: Secondary index data gone after restart (1.1.1)

CASSANDRA-3954 disabled caches on secondary index CF's in 1.1.0 and CASSANDRA-4197 enabled it in 1.1.1 Can you create a ticket on https://issues.apache.org/jira/browse/CASSANDRA I guessing this has something to do with the local partitioner used for the secondary index Cf. That would explain t

Re: Enable CQL3 from Astyanax

Hello Aaron, Thanks very much for your answer! Could you give me some hints on how implement that? So I could contribute a patch for that. After having a look at the Astyanax code, I saw that CQL is executed in the ThriftColumnFamilyQueryImpl class based on the org.apache.cassandra.thrift.C

Re: Multi datacenter, WAN hiccups and replication

> Therefore I was wondering if Cassandra already intelligently optimizes > for HH-over-WAN (since this is common) or alternately if there's a way > to enable HH for WAN replication? When the coordinator is preparing to process the request, done nodes in a foreign DC are treated like down nodes in

CQL / ASSUME for keys

Hi, I'm trying to do the following : update keyspace.CF set '2' = '2' + 12 WHERE KEY = 'mykey'; And got this answer: "Bad Request: cannot parse 'mykey' as hex bytes" Using this doesn't help: "assume keyspace.CF(KEY) VALUES ARE text; (Found here http://www.datastax.com/docs/1.0

Re: Enable CQL3 from Astyanax

Hello Aaron, I created an issue on the Astyanax github for this problem. I added a fix to support CQL3 in the tool. See the link https://github.com/Netflix/astyanax/issues/75. Thierry Had a quick look, the current master does not appear to support it. Cheers

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

Great stuff!!! On Tue, Jun 26, 2012 at 5:25 PM, Edward Capriolo wrote: > Hello all, > > It has not been very long since the first book was published but > several things have been added to Cassandra and a few things have > changed. I am putting together a list of changed content, for example > fe

Node crashing during read repair

Hi there, Today I found one node (running 1.1.1 in a 3 node cluster) being dead for the third time this week, it died with the following message: ERROR [ReadRepairStage:3] 2012-06-27 14:28:30,929 AbstractCassandraDaemon.java (line 134) Exception in thread Thread[ReadRepairStage:3,5,main] java.uti

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

Hi Edward, Looking forward to your book. It's always interesting to read what others have to say about a certain subject, and hopefully even learn new things! 2012/6/27 Raj N > Great stuff!!! > > > On Tue, Jun 26, 2012 at 5:25 PM, Edward Capriolo wrote: > >> Hello all, >> >> It has not been ver

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

Hey Edward, I finally posted my (short) blog post on using Hector with Jruby: http://synfin.net/sock_stream/technology/code/cassandra-hector-jruby-awesome If you're interested in documenting that more in detail in your book, let me know and I can help you with that in your book if you'd like. -

Re: Amazingly bad compaction performance

On Wed, Jun 27, 2012 at 1:42 AM, Derek Andree wrote: > Last I heard only Oracle's JDK was officially supported with Cassandra, > possibly nitpicky but is this still the case? > > On Jun 26, 2012, at 3:37 PM, Dustin Wenz wrote: > > > (OpenJDK 7) was pegged at 200% CPU > > Java 7 still hasn't been t

Re: bulk load problem

Thank you so much ! The problem was the RPC address, it was different than the listen address. I appreciate your help. Best, James On Wed, Jun 27, 2012 at 1:29 AM, Nury Redjepow wrote: > What is your yaml setting for rpc and listen server on destination node? > > Nury > > > Tue, 26 Jun 2012 17:

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

Sounds good. One thing I'd like to see is more coverage on Cassandra Internals. Out of the box Cassandra's great but having a little inside knowledge can be very useful because it helps you design your applications to work with Cassandra; rather than having to later make endless optimizations that

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

On Wed, Jun 27, 2012 at 3:08 PM, Courtney Robinson wrote: > Sounds good. > One thing I'd like to see is more coverage on Cassandra Internals. Out of > the box Cassandra's great but having a little inside knowledge can be very > useful because it helps you design your applications to work with Cass

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

RE: API method signatures changing That triggers another thought... What terminology will you use in the book to describe the data model? CQL? When we wrote the RefCard on DZone, we intentionally favored/used CQL terminology. On advisement f

Adding New Nodes to a Production Cluster

Hi, We have a production cluster with few nodes in each data center. Each node is being contacted in each data center to serve front end requests. I have a question about the method adding new nodes to the cluster (say, to improve RF or scalability). AFAIK, there are two methods to do this. 1. Br

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

On Wed, Jun 27, 2012 at 4:34 PM, Brian O'Neill wrote: > RE: API method signatures changing > > That triggers another thought... > > What terminology will you use in the book to describe the data model?  CQL? > > When we wrote the RefCard on DZone, we intentionally favored/used CQL > terminology. 

Re: Adding New Nodes to a Production Cluster

Hi Eran, As far as I'm aware of a node will not serve requests until the bootstrap (starts automatically these days) has been completed. So the problem of #1 is not really there Solution #2 is not straight forward and easy to make mistakes. When you're concerned about read consistency use a prope

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

I'm looking forward to getting a few copies of this. Some areas that would be great to cover - Indexing strategies - Configuring clients/env for sane timestamping - Efficient CQL - Top 8/10 perf issues/stacktraces and common resolutions - understanding nodetool tpstats/cfhistograms/cfst

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

Hi Edward, That's a great news! One thing I'd like to see in the new edition is Counters, known issues and how to avoid them: - avoid double counting (don't retry on failure, use write consistency level ONE, use dedicated Hector connector?) - delete counters (tricky, reset to zero?) - othe

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

On Thu, Jun 28, 2012 at 7:32 AM, Edward Capriolo wrote: > On Wed, Jun 27, 2012 at 4:34 PM, Brian O'Neill > wrote: > > RE: API method signatures changing > > > > That triggers another thought... > > > > What terminology will you use in the book to describe the data model? > CQL? > > > > When we wr

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

On Wed, Jun 27, 2012 at 1:34 PM, Brian O'Neill wrote: > RE: API method signatures changing > > That triggers another thought... > > What terminology will you use in the book to describe the data model?  CQL? > > When we wrote the RefCard on DZone, we intentionally favored/used CQL > terminology. 

which high level Java client

Dear all, I am interested in using Cassandra 1.1.1 in a read-intensive scenario, where more than 95% of my operations are get(). I have a cluster with ~10 nodes, around 15-20 GB of data on each, while in the extreme case I expect to have 20-40 concurrent clients. I am kind of confused about whic

Re: which high level Java client

Hello We are using Hector and it perfectly matching to our case. https://github.com/hector-client/hector -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/which-high-level-Java-client-tp7580842p7580844.html Sent from the cassandra-u...@incubator.a

Re: Adding New Nodes to a Production Cluster

Thanks Robin for the insight. I thought the node will start serving requests before the bootstrap process completes. Seems like I'm wrong. I got this verified thru #cassandra too. Thanks, Eran Chinthaka Withana On Wed, Jun 27, 2012 at 2:44 PM, Robin Verlangen wrote: > Hi Eran, > > As far as I'

cassandra queue

does anybody have experience with these projects? https://github.com/btoddb/cassandra-queue https://github.com/btoddb/cassandra-queue-spring thanks, deno