Skip to content
Mirror of Apache Accumulo
Java C++ Python Ruby JavaScript Shell Other
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.
assemble ACCUMULO-2589 Drop deprecated code from 1.x Jun 30, 2016
contrib ACCUMULO-4313 - Updated README text May 26, 2016
core ACCUMULO-4357 Use more diamond operators in Java 8 Jun 30, 2016
docs Merge branch '1.8' Jun 14, 2016
examples/simple Merge branch '1.8' Jun 30, 2016
fate Merge branch '1.8' Jul 1, 2016
iterator-test-harness Merge branch '1.8' May 27, 2016
maven-plugin Merge branch '1.8' Jul 1, 2016
minicluster ACCUMULO-4357 Use more diamond operators in Java 8 Jul 1, 2016
proxy ACCUMULO-4357 Use more diamond operators in Java 8 Jul 1, 2016
server ACCUMULO-4357 Use more diamond operators in Java 8 Jul 1, 2016
shell Merge branch '1.8' Jul 1, 2016
src/site Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT Jan 23, 2014
start Merge branch '1.8' Jul 1, 2016
test ACCUMULO-4357 Use more diamond operators in Java 8 Jul 1, 2016
.gitignore Merge branch '1.6' into 1.7 Jan 29, 2016
.travis.yml ACCUMULO-4182 Improve travis-ci notifications Jun 8, 2016
DEPENDENCIES ACCUMULO-3800 Add DEPENDENCIES file May 12, 2015 ACCUMULO-3409 Move fixed ports out of ephemeral range Jul 8, 2015
LICENSE Merge branch '1.6' into 1.7 Jun 17, 2016
NOTICE ACCUMULO-4347 Crypto notification should be in README files instead o… Jun 17, 2016 Merge branch '1.8' Jun 17, 2016 ACCUMULO-3936 First pass of documentation improvements for performanc… Jul 7, 2015 ACCUMULO-3551 1.7 upgrade instructions. May 11, 2015
pom.xml ACCUMULO-2589 Drop deprecated code from 1.x Jun 30, 2016

Apache Accumulo

Build Status Maven Central Javadoc Apache License

Apache Accumulo is a sorted, distributed key/value store that provides robust, scalable data storage and retrieval.

Apache Accumulo is based on Google's BigTable design and is built on top of Apache Hadoop, Zookeeper, and Thrift. It has several novel features such as cell-based access control and a server-side programming mechanism that can modify key/value pairs at various points in the data management process.


Follow these instructions to install and run an Accumulo binary distribution.


Accumulo has the following documentation which is viewable on the Accumulo website using the links below:

  • User Manual - In-depth developer and administrator documentation.
  • Examples - Code with corresponding README files that give step by step instructions for running the example.

This documentation can also be found in Accumulo distributions:

  • Binary distribution - The User Manual can be found in the docs directory. The Examples Readmes can be found in docs/examples. While the source for the Examples is not included, the distribution has a jar with the compiled examples. This makes it easy to run them after following the install instructions.

  • Source distribution - The Example Source, Example Readmes, and User Manual Source are available.


Accumulo uses Maven to compile, test, and package its source. The following command will build the binary tar.gz from source. Note, these instructions will not work for the Accumulo binary distribution as it does not include source.

mvn package -P assemble

This command produces a file at the following location.


This will not include documentation, adding the -P docs option to the maven command will build documentation.


The public Accumulo API is composed of :

All public types in the following packages and their subpackages excluding those named impl, thrift, or crypto.

  • org.apache.accumulo.core.client
  • org.apache.accumulo.minicluster

A type is a class, interface, or enum. Anything with public or protected acccess in an API type is in the API. This includes, but is not limited to: methods, members classes, interfaces, and enums. Package-private types in the above packages are not considered public API.

The following regex matches imports that are not Accumulo public API. This regex can be used with RegexpSingleline to automatically find suspicious imports in a project using Accumulo.


The Accumulo project maintains binary compatibility across this API within a major release, as defined in the Java Language Specification 3rd ed. Starting with Accumulo 1.6.2 and 1.7.0 all API changes will follow semver 2.0

Export Control

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

The following provides more details on the included cryptographic software:

Apache Accumulo uses the built-in java cryptography libraries in its RFile encryption implementation. See oracle's export-regulations doc for more details for on Java's cryptography features. Apache Accumulo also uses the bouncycastle library for some crypographic technology as well. See the BouncyCastle FAQ for more details on bouncycastle's cryptography features.

Something went wrong with that request. Please try again.