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: https://www.datastax.com/blog/2020/05/monitoring-apache-ca

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 regular tables. Look

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 repair). > As per documentation, in

[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 an

Re: [RELEASE] Apache Cassandra 3.0.8 released

>> Thank you. >> >>J. >> >> On Jul 6, 2016, at 4:20 PM, Jake Luciani wrote: >> >> The Cassandra team is pleased to announce the release of Apache Cassandra >> version 3.0.8. >> >> Apache Cassandra is a fully distributed datab

[RELEASE] Apache Cassandra 3.0.8 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.8. 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 an

[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 an

[RELEASE] Apache Cassandra 2.1.15 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.1.15. 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 a

[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 an

[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

ly does crash for the node, no graceful shutdown. > > > > On Mon, Jun 13, 2016 at 10:51 PM, Jake Luciani wrote: > >> Yeah same as drain. Just exits at the end. >> >> On Mon, Jun 13, 2016 at 1:11 PM, Anshu Vajpayee > > wrote: >> >>> Thanks for in

Re: Why there is no native shutdown command in cassandra

essage in ring ? > > > On Mon, Jun 13, 2016 at 10:14 PM, Jake Luciani wrote: > >> 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 >> >> Sin

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 V

[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 an

[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 an

[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 a

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

ession at all from the GC log timings. They're very > reasonable. > > On Thursday, April 21, 2016 10:57 AM, Jake Luciani > wrote: > > > It's only used by the Snappy and LZ4 Compressors > > On Thu, Apr 21, 2016 at 1:54 PM, Sotirios Delimanolis < > sotodel...

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 critical region was released.

[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 an

[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

[RELEASE] Apache Cassandra 3.0.4 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.4. 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 an

Re: [RELEASE] Apache Cassandra 3.3 released

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 > > On 9 Feb 2016, at 19:06,

Re: [RELEASE] Apache Cassandra 3.3 released

Hayworth > Developer, Engagement Engine > Atlassian > > My pronoun is "they". <http://pronoun.is/they> > > > > On Tue, Feb 9, 2016 at 10:50 AM, Jake Luciani wrote: > >> The Cassandra team is pleased to announce the release of Apache Cassandra >&

[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 dist

[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 di

[RELEASE] Apache Cassandra 2.2.5 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.5. 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 an

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 wrote: > The Cassandra team is pleased to announce the release of Apache Cassan

[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 a

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 the example on > http://w

[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 an

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 could

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 wrote: > > The Cassandra team is pleased to announce the release of Apache Cassandra > version 3.2. > > Apache Cassandra is

[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

[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 an

[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 address

[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 scalabili

[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 an

[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 a

[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 an

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 > one of 6 nodes: tools/

[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 driv

[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 sourc

[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 a

[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 an

[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 an

[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 a

Re: Consistency Issues

> 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 local node. >> 2.

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)

[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 sourc

[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 compromising

[RELEASE] Apache Cassandra 3.0.0-beta2 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.0-beta2. 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 sou

[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 an

[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 an

[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 ch

[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 please

[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 wit

[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 sourc

[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 an

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 wrote: > It looks to me that can indeed happen theoretically (I m

[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 an

[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 a

[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 sourc

[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 > wrote: > >> What impact would vnodes have on strong consistency? I think the problem >> you're describ

[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 a

[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 an

[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 unauthen

[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: http://cassandra.apache.org/d

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 wrote: > I have been usin

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 wrote: > Try repair -pr on all nodes. > > If after that you still have issues, you can try to rebuild t

[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 availa

[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 a

[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 an

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, 2014

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 wrote: > The Cassandra team is pleased to announce the release of Apache Cassandra > version 1.2.19. > > Cassandra is a highly scalable second-generation distribu

[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: http://cassan

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 wi

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 wrote: > So I'm a Java application developer and I'm trying to find entry points > for learning to work with Cassan

Re: high pending compactions

2&3 On Sunday, June 8, 2014, S C 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 pattern of high

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 wrote: > @Commite

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 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. If there > is on

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 wrote: > Hi, > > ** ** > > We recently switched from size tired compaction to Leveled c

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 < davide.anasta...@qualityc

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 wrote: > Like a lot of folks, I have a need for Big Data and fast queries on that > data. Hi

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 in

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 wrote: > 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 nodes show: > > java.

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

r existing data, what would happen (to > existing + new data) if the setting was changed and the servers were > restarted? > > Lastly, is there another mailing list I should be using for Solandra > questions? I couldn't find one.... > > Thanks, > Safdar > > >

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 wrote: > Hi, > > I've searched online but was unable to find any leads for the problem > below. This mailing

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 wrote: > On Fri, Apr 20, 2012 at 6:27 AM, aaron morton wrote: > >> Couple of ideas

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

ays of continuous 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 Lucia

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

t'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 s

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

e CF one by one, reboot and see 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

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 wrote: > Thanks Aaaron. Just to be clear, every time I do a compaction, > I rebuild all indexes from

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 wrote: > thankk :) :) it works :) > > > On Tue, Apr 10, 2012 at 3:07 PM, Henrik Schröder wrote: > >> In your code you are using BufferedTranspo

Re: 2 questions DataStax Enterprise

Hi reply inline. On Tue, Apr 3, 2012 at 12:18 PM, Alexandru Sicoe 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 take replicas f

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 wrote: > Hi, > > I am looking at cassandra for a logging application. We currently log to a >

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