cascalog: All content tagged as cascalog in NoSQL databases and polyglot persistence
“There’s not better way to write general-purpose Hadoop MapReduce programs when specialized tools like Hive and Pig aren’t quite what you need.”
Watch the video and slides after below.
✚ At Twitter, the creators of Scalding, different teams use different libraries for dealing with different scenarios.
✚ Dean Wampler is the co-author of the Programming Scala book so his preference for Scala is understandable.
✚ Do you know any other teams or companies using Scalding instead of Cascading or Cascalog?
Original title and link: An Overview of Scalding ( ©myNoSQL)
Just 19 slides, but Paul Lam manages to provide both a comparison of Cascalog and Hive, plus an overview of the most interesting bits of Cascalog.
Cascalog vs Hive
Cascalog Query Pipe Assembly
Highly recommended for understanding what’s in the Cascalog box.
That’s to say BackType, creators of Cascalog, ElephantDB, and Storm , has been acquired by Twitter (which in case you didn’t know names most of their open source libraries and storage solutions using bird names).
The announcement is here . Looking forward to seeing Storm open sourced.
Original title and link: ElephantDB and Storm Join the Twitter Flock ( ©myNoSQL)
I didn’t know BackType’s ElephantDB is open source and available on GitHub, same as their Cascalog the Clojure based query language for Hadoop.
Just a quick reference of the continuously growing Hadoop tools ecosystem.
The Apache Hadoop project develops open-source software for reliable, scalable, distributed computing.
A distributed file system that provides high throughput access to application data.
A software framework for distributed processing of large data sets on compute clusters.
Amazon Elastic MapReduce
Amazon Elastic MapReduce is a web service that enables businesses, researchers, data analysts, and developers to easily and cost-effectively process vast amounts of data. It utilizes a hosted Hadoop framework running on the web-scale infrastructure of Amazon Elastic Compute Cloud (Amazon EC2) and Amazon Simple Storage Service (Amazon S3).
Cloudera Distribution for Hadoop (CDH)
Cloudera’s Distribution for Hadoop (CDH) sets a new standard for Hadoop-based data management platforms.
A high-performance coordination service for distributed applications. ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.
A scalable, distributed database that supports structured data storage for large tables.
Sqoop (“SQL-to-Hadoop”) is a straightforward command-line tool with the following capabilities:
- Imports individual tables or entire databases to files in HDFS
- Generates Java classes to allow you to interact with your imported data
- Provides the ability to import from SQL databases straight into your Hive data warehouse
Flume is a distributed, reliable, and available service for efficiently moving large amounts of data soon after the data is produced.
Hive is a data warehouse infrastructure built on top of Hadoop that provides tools to enable easy data summarization, adhoc querying and analysis of large datasets data stored in Hadoop files. It provides a mechanism to put structure on this data and it also provides a simple query language called Hive QL which is based on SQL and which enables users familiar with SQL to query this data. At the same time, this language also allows traditional map/reduce programmers to be able to plug in their custom mappers and reducers to do more sophisticated analysis which may not be supported by the built-in capabilities of the language.
A high-level data-flow language and execution framework for parallel computation. Apache Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs. The salient property of Pig programs is that their structure is amenable to substantial parallelization, which in turns enables them to handle very large data sets.
Oozie is a workflow/coordination service to manage data processing jobs for Apache Hadoop. It is an extensible, scalable and data-aware service to orchestrate dependencies between jobs running on Hadoop (including HDFS, Pig and MapReduce).
Cascading is a Query API and Query Planner used for defining and executing complex, scale-free, and fault tolerant data processing workflows on a Hadoop cluster.
Cascalog is a tool for processing data on Hadoop with Clojure in a concise and expressive manner. Cascalog combines two cutting edge technologies in Clojure and Hadoop and resurrects an old one in Datalog. Cascalog is high performance, flexible, and robust.
Hue is a graphical user interface to operate and develop applications for Hadoop. Hue applications are collected into a desktop-style environment and delivered as a Web application, requiring no additional installation for individual users.
You can read more about HUE on ☞ Cloudera blog.
Chukwa is a data collection system for monitoring large distributed systems. Chukwa is built on top of the Hadoop Distributed File System (HDFS) and Map/Reduce framework and inherits Hadoop’s scalability and robustness. Chukwa also includes a ﬂexible and powerful toolkit for displaying, monitoring and analyzing results to make the best use of the collected data.
A Scalable machine learning and data mining library.
Integration with Relational databases
Integration with Data Warehouses
The only list I have is MapReduce, RDBMS, and Data Warehouse, but I’m afraid it is quite a bit old. So maybe someone could help me update it.
Anything else? Once we validate this list, I’ll probably have to move it on the NoSQL reference