Get Accumulo: Application Development, Table Design, and Best PDF

By Aaron Cordova, Billie Rinaldi, Michael Wall

ISBN-10: 1449374182

ISBN-13: 9781449374181

Wake up to hurry on Apache Accumulo, the versatile, high-performance key/value shop created via the nationwide defense organisation (NSA) and according to Google’s BigTable info garage procedure. Written via former NSA staff contributors, this finished instructional and reference covers Accumulo structure, software improvement, desk layout, and cell-level security.

With transparent info on approach management, functionality tuning, and top practices, this ebook is perfect for builders trying to write Accumulo functions, directors charged with fitting and preserving Accumulo, and different pros drawn to what Accumulo has to provide. you will discover every thing you should use the program fully.

Get a high-level advent to Accumulo’s structure and information model
Take a quick journey via unmarried- and multiple-node installations, info ingest, and query
how one can write Accumulo functions for numerous use situations, in keeping with examples
Dive into Accumulo internals, together with details no longer to be had within the documentation
Get precise details for fitting, administering, tuning, and measuring performance
research top practices according to winning implementations within the field
locate solutions to universal questions that each new Accumulo consumer asks

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Additional info for Accumulo: Application Development, Table Design, and Best Practices

Example text

HBase becomes a subproject. At the same time, a team of computer scientists and mathematicians at the US National Security Agency (NSA) are evaluating the use of various big data tech‐ nologies, including Apache Hadoop and HBase, in an effort to help solve the issues involved with storing and processing large amounts of data of different sensitivity levels. Authors Billie Rinaldi and Aaron Cordova are part of this team. July 2008 Powerset is acquired by Microsoft. After reviewing existing solutions and comparing the stated objectives of existing open source projects to the agency’s goals, the NSA team begins a new imple‐ mentation of Google’s Bigtable.

Application develop‐ ers do not need to worry about retrying their operations simply because a machine fails. In a large cluster these types of failures are commonplace, and Accumulo does a lot of work to minimize the burden on application developers as well as administrators so that a single instance running on thousands of machines is tractable. Support for Analysis: Iterators Storing large amounts of data and making it searchable is only part of the solution to the problem of taking full advantage of big data.

A scanner can start at the beginning of a table or at a particular key, and can stop at the end of the table or a given key. After seeking to the initial key, scanners proceed to read out key-value pairs sequentially in key order until reaching the end of the table or the specified ending key. Scanners can be configured to read only certain columns. Additional configuration for a scanner can be made to apply additional logic classes called iterators, and specific options to iterators, to alter the set of keyvalue pairs returned from a particular scanner.

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Accumulo: Application Development, Table Design, and Best Practices by Aaron Cordova, Billie Rinaldi, Michael Wall

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