Cassandra File System Design | DatastaxAstra DB gives JavaScript developers a complete data API and out-of-the-box integrations that make it easier to build production RAG apps with high relevancy and low latency.
Cassandra Performance Testing on EC2 « Geekout
The tests were performed over several days in Sept 2010 with Cassandra 0.6.2 utilizing the supplied contrib/py_stress tests. ** Inconclusive results because of slow EBS drive General EC2 Since the tests are typically large and do not fit in RAM our intent was to test EC2′s hardware performance, not necessarily Cassandra’s performance with things like cached data. As with any performance testing
NoSQLをRDBの代わりに使うと、どういう恐ろしいことが起こるか。PARTAKEの作者が語る
データベースの世界でいま注目されているのがNoSQL。特にキーバリュー型データストアは、グーグルのBigTable、FacebookやTwitterが内部で利用しているCassandraやAmazonクラウドが提供しているSimpleDBなど、すでに実際に使われ始めています。 ではそのNoSQLをリレーショナルデータベースの代わりに使ってシステムを構築するとどうなるのか？ 身をもって体験したことを記したShinya Kawanaka氏によるプレゼンテーション「間違った方向にCassandraを使ってみた」が公開されています。 NoSQLを用いたシステム構築は、リレーショナルデータベースによる構築どう違うのか？ とても分かりやすくまとめられています。ご本人の承諾もいただいたので、その内容を紹介しましょう。 NoSQLを使ったときに起こる恐ろしい事例 プレゼンテーションのテーマは「NoSQLを
StorageConfiguration - Cassandra Wiki
Prior to the 0.7 release, Cassandra storage configuration is described by the conf/storage-conf.xml file. As of 0.7, it is described by the conf/cassandra.yaml file. Loading the Config config-converter To convert a working storage-conf.xml into yaml, bin/config-converter will complete a best-effort conversion. It assumes that your xml file is at conf/storage-conf.xml, and it will output to conf/ca
HadoopSupport - Cassandra Wiki
Contents Overview MapReduce Pig Hive Oozie Cluster Configuration Troubleshooting Support Overview Hadoop integration was added way back in version 0.6 of Cassandra. It began with MapReduce support. Since then the support has matured significantly and now includes native support for Apache Pig and Apache Hive. Cassandra's Hadoop support implements the same interface as HDFS to achieve input data lo
Geekout – From one propeller head to another!
Open source software has become an integral part of the tech industry. It is a type of software whose source code is available to the public, allowing anyone to modify and redistribute it. Working on open source projects can be an enriching experience for people with diverse skill sets. Here are 7 reasons why you should work on open source projects. Below is a list of things I've noticed that anno
johanoskarsson's cassandra-ec2 at master - GitHub
Cassandra EC2 ------------- This collection of scripts allows you to run Cassandra clusters on Amazon.com's Elastic Compute Cloud (EC2) service described at: http://aws.amazon.com/ec2 Getting started --------------- Before you do anything make sure you follow the Amazon setup guide: http://docs.amazonwebservices.com/AWSEC2/latest/GettingStartedGuide/ To start a cluster: 1) Edit cassandra-ec2-env.s
Hadoopソースコードリーディング第3回 Hadopo MR + Cassandra
The document discusses integrating Apache Cassandra, a NoSQL database, with Hadoop MapReduce. Specifically, it describes how Cassandra can be used as an input source and storage destination for MapReduce jobs. It also provides information on configuration options and contributing code to the Cassandra MapReduce integration.Read less
Hector – a Java Cassandra client | PrettyPrint.me
UPDATE: I added a downloads section, so you may simply download the jar and sources if you’re not into git or maven. UPDATE 2: I added license clarification; the license it MIT, which is the most permissive license I know of and basically lets you do anything with the software: use it commercially or uncommercially, copy it, fork it (but I’ll be happy to accept patches and committers) and whatnot.
Cassandra : inverted index – Port twenty two
Cassandra is the only NOSQL datastore I’m aware of, which is scalable, distributed, self replicating, eventually consistent, schema-less key-value store running on java which doesn’t have a single point of failure. HBase could also match most of these requirements, but Cassandra is easier to manage due to its tiny footprint. The one thing Cassandra doesn’t do today is indexing columns. Lets
Cassandra+Hadoop
This document discusses using MapReduce with Cassandra. It describes how writing to Cassandra from MapReduce has always been possible, while reading was enabled starting with Cassandra 0.6.x. Using MapReduce with Cassandra provides analytics capabilities and avoids single points of failure compared to MapReduce with HBase. The document covers setup and configuration considerations like locality, a
API - Cassandra Wiki
CQL Cassandra offers a SQL-inspired interface called CQL. The primary difference from SQL is the emphasis on denormalization (via Collections) over Joins. There is a quick introduction in GettingStarted and full documentation here. To use CQL effectively you should also understand the [DataModel]. If you plan to write a CQL client, you should also read about the communication protocol specificatio
GridCentric: Howto: Build and scale a Cassandra cluster in five minutes
Thursday, August 5, 2010 Howto: Build and scale a Cassandra cluster in five minutes Introduction In the spirit of the software recipes we've been posting recently, I decided to give Cassandra a shot. Cassandra is a distributed key-value store that was open-sourced by Facebook in 2008 and is now under the umbrella of the Apache foundation. It advertises high-performance and robustness to individua
OCTO Talks !
Ces dernières années, une nouvelle approche de documentation de l'architecture à émergé : le diagrams-as-code, avec le C4Model en figure de proue. Mais plusieurs outils et notations existent pour "faire" du C4Model ! Cet article propose d'illustrer le fonctionnement de C4Model avec différents outils pour vous aider à faire un choix.
Real World Ruby and Cassandra
I am a computer programmer and racounteur entrepreneur based in Baltimore. IntroductionAt OtherInbox I recently built a QA system using the Cassandra datastore. I really like this technology and so far I would recommend it, but the learning curve for Rubyists is still pretty high. There are some good examples online (especially the canonical article by Evan Weaver) but nothing showing more interme
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http://svn.apache.org/repos/asf/cassandra/trunk/contrib/word_count/src/WordCount.java
https://allthingshadoop.com/2010/05/17/hadoop-bigdata-cassandra-a-talk-with-jonathan-ellis/
https://allthingshadoop.com/2010/04/24/running-hadoop-mapreduce-with-cassandra-nosql/
Embedding Cassandra into your JavaEE AppServer
NoSQL vs. RDBMS: Let the flames begin! | stu.mp