New Metrics Collector for Apache Cassandra w/ Prometheus

Hi, Hope this email finds you well. DataStax has recently open sourced a new metrics collector for Apache Cassandra. It's a drop in solution and comes with Prometheus dashboards and works with all versions between 2.2 to 4.0 alpha. Blog:

Re: Counter performance

You can set the trace probability on a node to 1% and you'll catch a trace on that table. http://cassandra.apache.org/doc/latest/tools/nodetool/settraceprobability.html On Mon, Apr 17, 2017 at 11:17 AM, benjamin roth wrote: > Just run some queries on counter tables. Some on

Re: Incremental repair for the first time

This was fixed post 3.0.4 please upgrade to latest 3.0 release On Fri, Dec 16, 2016 at 4:49 PM, Kathiresan S wrote: > Hi, > > We have a brand new Cassandra cluster (version 3.0.4) and we set up > nodetool repair scheduled for every day (without any options for

[RELEASE] Apache Cassandra 3.0.9 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.9. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: [RELEASE] Apache Cassandra 3.0.8 released

es do not seem to have been published. Normal? >> >> Thank you. >> >>J. >> >> On Jul 6, 2016, at 4:20 PM, Jake Luciani <j...@apache.org> wrote: >> >> The Cassandra team is pleased to announce the release of Apache Cassandra >> versi

[RELEASE] Apache Cassandra 2.2.7 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.7. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.0.7 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.7. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.7 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.7. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and

Re: Why there is no native shutdown command in cassandra

mmand. Means it only does crash for the node, no graceful shutdown. > > > > On Mon, Jun 13, 2016 at 10:51 PM, Jake Luciani <jak...@gmail.com> wrote: > >> Yeah same as drain. Just exits at the end. >> >> On Mon, Jun 13, 2016 at 1:11 PM, Anshu Vajpayee

Re: Why there is no native shutdown command in cassandra

node also announce shutting down > message in ring ? > > > On Mon, Jun 13, 2016 at 10:14 PM, Jake Luciani <jak...@gmail.com> wrote: > >> If you want to understand why, it's because C* was designed to be >> crash-only. >> >> https://www.usenix.org/co

Re: Why there is no native shutdown command in cassandra

If you want to understand why, it's because C* was designed to be crash-only. https://www.usenix.org/conference/hotos-ix/crash-only-software Since this is great for the project but bad for operators experience we have later added this stopdaemon command. On Mon, Jun 13, 2016 at 12:37 PM, Anshu

[RELEASE] Apache Cassandra 3.6 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.6. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and

[RELEASE] Apache Cassandra 3.0.6 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.6. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.6 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.6. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.14 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.14. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: What does Cassandra use (JNI?) that triggers GCLocker Initiated GCs?

; > I don't get that impression at all from the GC log timings. They're very > reasonable. > > On Thursday, April 21, 2016 10:57 AM, Jake Luciani <jak...@gmail.com> > wrote: > > > It's only used by the Snappy and LZ4 Compressors > > On Thu, Apr 21, 2016 at 1:54 PM, S

Re: What does Cassandra use (JNI?) that triggers GCLocker Initiated GCs?

It's only used by the Snappy and LZ4 Compressors On Thu, Apr 21, 2016 at 1:54 PM, Sotirios Delimanolis wrote: > According to this Oracle document > , GCLocker > Initiated GC > > is triggered when a JNI

[RELEASE] Apache Cassandra 3.5 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.5. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and

[RELEASE] Apache Cassandra 3.0.5 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.5. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.4 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.4. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and

Re: [RELEASE] Apache Cassandra 3.3 released

? > > Thanks! :) > > ___ > Will Hayworth > Developer, Engagement Engine > Atlassian > > My pronoun is "they". <http://pronoun.is/they> > > > > On Tue, Feb 9, 2016 at 10:50 AM, Jake Luciani <j...@apache.org> wrote: > >> The Cassandra team is pleas

[RELEASE] Apache Cassandra 3.3 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.3. *This release contains a critical bug in 3.0 series[4].* If you have installed version >= 3.0 you will need to run 'nodetool upgradesstables -a' on all nodes to receive the fix. Apache Cassandra is a fully

[RELEASE] Apache Cassandra 3.0.3 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.3. *This release contains a critical bug in 3.0 series[4].* If you have installed version >= 3.0 you will need to run 'nodetool upgradesstables -a' on all nodes to receive the fix. Apache Cassandra is a fully

Re: [RELEASE] Apache Cassandra 3.3 released

Just to confirm, if you upgrade from, 2.2.x say, directly to 3.3, you will > *not* need to run upgradesstables, right? It seems pretty clear that the > answer is no but I just wanted to make sure. Only needed if you got from a > 3.x version? > > Thank you. > > Sent from my iPhone >

Re: [RELEASE] Apache Cassandra 2.1.13 released

Apologies I send the wrong changelog and news links. Here are the correct ones for 2.1.13 http://goo.gl/9ZPnNX (CHANGES.txt) http://goo.gl/5cR7eh (NEWS.txt) On Mon, Feb 8, 2016 at 9:19 AM, Jake Luciani <j...@apache.org> wrote: > The Cassandra team is pleased to announce the release

[RELEASE] Apache Cassandra 2.1.13 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.13. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: cassandra-stress tool - InvalidQueryException: Batch too large

Yeah that looks like a bug. Can you open a JIRA and attach the full .yaml? Thanks! On Mon, Feb 1, 2016 at 5:09 AM, Ralf Steppacher wrote: > I am using Cassandra 2.2.4 and I am struggling to get the cassandra-stress > tool to work for my test scenario. I have followed

[RELEASE] Apache Cassandra 3.2.1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.2.1. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: Cassandra 3.1.1 with respect to HeapSpace

Yes you can restart without data loss. Can you please include info about how much data you have loaded per node and perhaps what your schema looks like? Thanks On Thu, Jan 14, 2016 at 12:24 PM, Jean Tremblay < jean.tremb...@zen-innovations.com> wrote: > > Ok, I will open a ticket. > > How

[RELEASE] Apache Cassandra 3.2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and

Re: [RELEASE] Apache Cassandra 3.2 released

Note: I made a mistake saying this is a bug fix release, it's a feature release that includes bugfixes. On Tue, Jan 12, 2016 at 8:46 AM, Jake Luciani <j...@apache.org> wrote: > > The Cassandra team is pleased to announce the release of Apache Cassandra > version 3.2. >

[RELEASE] Apache Cassandra 3.1.1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.1.1. There has been some understandable confusion about our new Tick-Tock release style. This thread should help explain it [4]. Since a critical bug was discovered just after 3.1 we are releasing 3.1.1 to

[RELEASE] Apache Cassandra 3.0.2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.1. This is the first release from our new Tick-Tock release process[4]. It contains only bugfixes on the 3.0 release. Apache Cassandra is a fully distributed database. It is the right choice when you need

[RELEASE] Apache Cassandra 3.0.1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.1. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.4 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.4. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.12 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.12. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: cassandra-stress 2.1: Generating data

The data is only being inserted from gen01 On Thu, Dec 3, 2015 at 10:52 AM, wrote: > Hi, > > > > I’m trying to insert data with Cassandra-stress into cluster C* with 6 > nodes: *node001….006* > > > > The stress-tool is executed on a different machine (*gen01*) specifying

[RELEASE] Apache Cassandra 3.0.0 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0. Top Cassandra 3.0 features: * CQL optimized storage engine and sstable format * Materialized views * More efficient hints Read more about features and upgrade instructions in NEWS.txt[2] The Java

[RELEASE] Apache Cassandra 3.0.0-rc2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0-rc2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

[RELEASE] Apache Cassandra 2.1.11 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.11. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.3 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.3. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.10 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.10. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: Consistency Issues

Couple things to try. 1. nodetool resetlocalschema on the nodes with missing CFs. This will refresh the schema on the local node. 2. upgrade to 2.1.9. There are some pretty major issues in 2.1.6 (nothing specific to this problem but worth upgrading)

Re: Consistency Issues

s. Our application > is using Hector and migrating to cql3 is a huge refactoring. > > > > On 01/10/15 15:48, Jake Luciani wrote: > >> Couple things to try. >> >> 1. nodetool resetlocalschema on the nodes with missing CFs. This will >> refresh the schema on the loc

[RELEASE] Apache Cassandra 2.0.17 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.0.17. This is most likely the final release for the 2.0 release series. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without

[RELEASE] Apache Cassandra 3.0.0-rc1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0-rc1. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

[RELEASE] Apache Cassandra 2.2.1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.1. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.9 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.9. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.0.0-beta1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0-beta1. You’ll need python-driver 3.0.0a2 (available on pypi) or java-driver 3.0.0-alpha2 (uploaded to Maven Central) to try out 3.0.0-beta1. Apache Cassandra is a fully distributed database. It is the right

[RELEASE] Apache Cassandra 3.0.0-alpha1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0-alpha1. This is the first test build of Cassandra 3.0 that includes: * New storage engine * New sstable format * Materialized Views We expect bugs in this release so test and report any issues

[RELEASE] Apache Cassandra 2.2.0 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.0. You can read about the release here: http://www.datastax.com/dev/blog/cassandra-2-2 Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability

[RELEASE] Apache Cassandra 2.1.8 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.8. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.0-rc2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.0-rc2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

Re: Adding Nodes With Inconsistent Data

This is no longer an issue in 2.1. https://issues.apache.org/jira/browse/CASSANDRA-2434 We now make sure the replica we bootstrap from is the one that will no longer own that range On Wed, Jun 24, 2015 at 4:58 PM, Alain RODRIGUEZ arodr...@gmail.com wrote: It looks to me that can indeed happen

[RELEASE] Apache Cassandra 2.0.16 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.0.16. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.7 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.7. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.2.0-rc1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.0-rc1. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

[RELEASE] Apache Cassandra 2.1.6 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.6. We are now calling 2.1 series stable and suitable for production. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising

Re: Multiple cassandra instances per physical node

If I have a 20-node cluster with 2 nodes on each physical server, can I use 10 racks to properly segment my partitions? Yes. On Sun, May 24, 2015 at 5:38 PM, Jonathan Haddad j...@jonhaddad.com wrote: What impact would vnodes have on strong consistency? I think the problem you're

[BETA-RELEASE] Apache Cassandra 2.2.0-beta1 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.0-beta1. This release is *not* production ready. We are looking for testing of existing and new features. If you encounter any problem please let us know [1]. Cassandra 2.2 features major enhancements such as:

[RELEASE] Apache Cassandra 2.0.15 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.0.15. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.5 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.5. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[SECURITY ANNOUNCEMENT] CVE-2015-0225

CVE-2015-0225: Apache Cassandra remote execution of arbitrary code Severity: Important Vendor: The Apache Software Foundation Versions Affected: Cassandra 1.2.0 to 1.2.19 Cassandra 2.0.0 to 2.0.13 Cassandra 2.1.0 to 2.1.3 Description: Under its default configuration, Cassandra binds an

[RELEASE] Apache Cassandra 2.0.13 released

Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and binary distributions are listed in our download section:

Re: Cassandra Stress Test Result Evaluation

Your insert settings look unrealistic since I doubt you would be writing 50k rows at a time. Try to set this to 1 per partition and you should get much more consistent numbers across runs I would think. select: fixed(1)/10 On Wed, Mar 4, 2015 at 7:53 AM, Nisha Menon nisha.meno...@gmail.com

Re: Many pending compactions

Ja, Please upgrade to official 2.1.3 we've fixed many things related to compaction. Are you seeing the compactions % complete progress at all? On Wed, Feb 18, 2015 at 11:58 AM, Roni Balthazar ronibaltha...@gmail.com wrote: Try repair -pr on all nodes. If after that you still have issues, you

[RELEASE] Apache Cassandra 2.1.3 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.3. This release contains over 100 fixes for 2.1 so anyone on 2.1.X should upgrade to this ASAP. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high

[RELEASE] Apache Cassandra 2.0.12 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.0.12. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 2.1.2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.2. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Apache Cassandra debian repo issue

Hello, There is currently an issue with the apache debian repo for cassandra. ASF infrastructure is working on fixing this https://issues.apache.org/jira/browse/INFRA-8558 Sorry for the inconvenience. -Jake

Re: CPU consumption of Cassandra

Eric, We have a new stress tool to help you share your schema for wider bench marking. see http://www.datastax.com/dev/blog/improved-cassandra-2-1-stress-tool-benchmark-any-schema If you wouldn't mind creating a yaml for your schema I would be happy to take a look. -Jake On Mon, Sep 22,

[RELEASE] Apache Cassandra 1.2.19 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 1.2.19. Cassandra is a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model. You can read more here:

Re: [RELEASE] Apache Cassandra 1.2.19 released

Apologies, the correct url for CHANGES.txt is http://goo.gl/eB973i On Thu, Sep 18, 2014 at 12:58 PM, Jake Luciani j...@apache.org wrote: The Cassandra team is pleased to announce the release of Apache Cassandra version 1.2.19. Cassandra is a highly scalable second-generation distributed

Re: Why is the cassandra documentation such poor quality?

I'll note that historically the wiki used to be open to all and due massive amounts of spam it was put on lockdown by the ASF. If there is a better platform the community feels would make it simpler to provide community based documentation then we should consider it. The ASF also has confluence

Re: Which way to Cassandraville?

Checkout datastax devcenter which is a GUI datamodelling tool for cql3 http://www.datastax.com/what-we-offer/products-services/devcenter On Sun, Jul 20, 2014 at 7:17 PM, jcllings jclli...@gmail.com wrote: So I'm a Java application developer and I'm trying to find entry points for learning to

Re: high pending compactions

23 On Sunday, June 8, 2014, S C as...@outlook.com wrote: I am using Cassandra 1.1 (sorry bit old) and I am seeing high pending compaction count. pending tasks: 67 while active compaction tasks are not more than 5. I have a 24CPU machine. Shouldn't I be seeing more compactions? Is this a

Re: HsHa

This is technically a Thrift message not Cassandra, it happens when a client hangs up without closing the socket. You should be able to silence it by raising the class specific log level see log4j-server.properties as an example On Wed, Aug 14, 2013 at 9:59 AM, Alain RODRIGUEZ arodr...@gmail.com

Re: Why does cassandra PoolingSegmentedFile recycle the RandomAccessReader?

Take a look at https://issues.apache.org/jira/browse/CASSANDRA-5661 On Mon, Jul 15, 2013 at 4:18 AM, sulong sulong1...@gmail.com wrote: Thanks for your help. Yes, I will try to increase the sstable size. I hope it can save me. 9000 SSTableReader x 10 RandomAccessReader x 64Kb = 5.6G memory.

Re: Leveled Compaction, number of SStables growing.

We run with 128mb some run with 256mb. Leveled compaction creates fixed sized sstables by design so this is the only way to lower the file count. On Tue, Jul 9, 2013 at 2:56 PM, PARASHAR, BHASKARJYA JAY bp1...@att.comwrote: Hi, ** ** We recently switched from size tired compaction to

Re: Data model for financial time series

We have built a similar system, you can ready about our data model in CQL3 here: http://www.slideshare.net/carlyeks/nyc-big-tech-day-2013 We are going to be presenting a similar talk next week at the cassandra summit. On Fri, Jun 7, 2013 at 12:34 PM, Davide Anastasia

Re: Cassandra and Apache Drill

I don't think Drill has been accepted into the incubator yet or has any code. If/When that happens then it's entirely possible Cassandra could be integrated. On Fri, Aug 31, 2012 at 4:29 PM, John Onusko jonu...@actiance.com wrote: Like a lot of folks, I have a need for Big Data and fast

Re: DSE solr HA

Going through this page and it looks like indexes are stored locally http://www.datastax.com/dev/blog/cassandra-with-solr-integration-details . My question is what happens if one of the solr nodes crashes? Is the data indexed again on those nodes? Yes the data is indexed again

Re: java.lang.OutOfMemoryError: unable to create new native thread

This means you need to raise the nproc limit for the user you run cassandra with On Mon, Jun 25, 2012 at 8:48 AM, Oli Schacher cassan...@lists.wgwh.chwrote: Hi list I have a small cassandra cluster consisting of three nodes. Every few weeks the whole cluster goes down at the same time. All

Re: RandomPartitioner is providing a very skewed distribution of keys across a 5-node Solandra cluster

Hi Safdar, If you want to get better utilization of the cluster raise the solandra.shards.at.once param in solandra.properties -Jake On Sun, Jun 24, 2012 at 11:00 AM, Safdar Kureishy safdar.kurei...@gmail.com wrote: Hi, I've searched online but was unable to find any leads for the

Re: 200TB in Cassandra ?

What other solutions are you considering? Any OLTP style access of 200TB of data will require substantial IO. Do you know how big your working dataset will be? -Jake On Fri, Apr 20, 2012 at 3:30 AM, Franc Carter franc.car...@sirca.org.auwrote: On Fri, Apr 20, 2012 at 6:27 AM, aaron morton

Re: Is the secondary index re-built under compaction?

No, the indexes are not rebuilt every compaction. Only if you manually rebuild or bootstrap a new node does it use compaction manager to rebuild. On Tue, Apr 17, 2012 at 9:47 AM, Maxim Potekhin potek...@bnl.gov wrote: Thanks Aaaron. Just to be clear, every time I do a compaction, I rebuild

Re: Is the secondary index re-built under compaction?

if that helps. Maxim On 4/17/2012 9:53 AM, Jake Luciani wrote: No, the indexes are not rebuilt every compaction. Only if you manually rebuild or bootstrap a new node does it use compaction manager to rebuild. On Tue, Apr 17, 2012 at 9:47 AM, Maxim Potekhin potek...@bnl.gov wrote

Re: Is the secondary index re-built under compaction?

says it's building the index, not compacting the corresponding CF. Either that's an ambiguous diagnostic, or indeed something is not right with my rig as of late. Maxim On 4/17/2012 10:05 AM, Jake Luciani wrote: Well, the since the secondary indexes are themselves column families

Re: Is the secondary index re-built under compaction?

loading process. Since the nodes have good hardware (24 cores + SSD), the apparent load on each node was nothing remarkable, even at 20kHz insertion rate. But maybe I'm being overoptimistic. Maxim On 4/17/2012 10:12 AM, Jake Luciani wrote: Hmm that does sound fishy. When you run show

Re: cassandra and .net

You can also look at using a .net client wrapper like https://github.com/managedfusion/fluentcassandra On Tue, Apr 10, 2012 at 8:06 AM, puneet loya puneetl...@gmail.com wrote: thankk :) :) it works :) On Tue, Apr 10, 2012 at 3:07 PM, Henrik Schröder skro...@gmail.comwrote: In your

Re: Write performance compared to Postgresql

Hi Jeff, Writing serially over one connection will be slower. If you run many threads hitting the server at once you will see throughput improve. Jake On Apr 3, 2012, at 7:08 AM, Jeff Williams je...@wherethebitsroam.com wrote: Hi, I am looking at cassandra for a logging application.

Re: 2 questions DataStax Enterprise

Hi reply inline. On Tue, Apr 3, 2012 at 12:18 PM, Alexandru Sicoe adsi...@gmail.com wrote: Hi guys, I'm trying out DSE and looking for the best way to arrange the cluster. I have 9 nodes: 3 behind a gateway taking in writes from my collectors and 6 outside the gateway that are supposed to

Re: Row iteration using RandomPartitioner

Correct. Random partitioner order is md5 token order. If you make no changes you will get the same order On Apr 2, 2012, at 7:53 AM, christopher-t...@ubs.com wrote: Hi, Bit of a silly question, is row iteration using the RandomPartitioner deterministic? I don't particularly care what

Re: Is the wiki outdated regarding Hive support?

Hi Ben. That is still the repo. The code that ships with latest DSE is the hive-0.8.1-merge branch. We will try to get this into the Cassandra trunk asap. Jake On Apr 1, 2012, at 6:39 PM, Ben McCann b...@benmccann.com wrote: The wiki says Hive support is currently a standalone project

Re: How much has Cassandra improved from 0.8.6 to 1.0+?

Well as they say Lies, damned lies, and statistics This is a alternate comparison you can review: http://www.cubrid.org/blog/dev-platform/nosql-benchmarking/ YCSB is a known and agreed upon benchmark. The benchmark you link includes no sourcecode to reproduce with and as the author mentions For

Re: Deploying Cassandra 1.0.7 on EC2 in minutes

Thanks Andrei! On Wed, Jan 18, 2012 at 8:00 AM, Andrei Savu savu.and...@gmail.com wrote: Hi guys, I just want to the let you know that Apache Whirr trunk (the upcoming 0.7.1 release) can deploy Cassandra 1.0.7 on AWS EC2 Rackspace Cloud. You can give it a try by running the following

Re: best practices for simulating transactions in Cassandra

I've written a locking mechanism for Solandra (I refer to it as a reservation system) which basically allows you to acquire a lock. This is used to ensure a node is service unique sequential IDs for lucene. It sounds a bit similar to Dominic's description but I'll explain how the Solandra one

Re: best practices for simulating transactions in Cassandra

algorithm doesn't have the possibility of deadlock or livelock. It does seem that you have covered a lot of the bases though. Thanks for sharing guys :) John On Mon, Dec 12, 2011 at 6:21 AM, Jake Luciani jak...@gmail.com wrote: I've written a locking mechanism for Solandra (I refer

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