Source Code for MapR Software
MapR releases source code to the open-source community for enhancements that MapR has made to the Apache Hadoop project and other ecosystem components.
MapR regularly releases updates to Apache Hadoop ecosystem projects as the projects are released by Apache, after MapR can verify that the changes do not impact product stability. Releases of ecosystem components are independent of the release cycle for the core MapR software, so that new updates can be released quickly and efficiently.
Source code developed by MapR can be found on GitHub at
http://github.com/mapr as of March 2013, coincident
with version 2.1.2 of the MapR distribution. MapR may also release
source code for other MapR projects at github.com/mapr. For each
release that MapR includes in its distribution, MapR branches and
tags the release on GitHub using the underlying project release
number appended by
Component Repositories on GitHub
The following repositories are available on GitHub for components that MapR has enhanced, patched, or created.
Finding Source Changes Prior to February 2013
GitHub is the single, central location for tracking changes that MapR applies to components in releases of the MapR distribution. Prior to February 2013, MapR included a list of patches in each component directory, as shown below. This information is no longer stored in the installation directory for recent releases, and instead is available at GitHub.Example: Location of Information about MapR Patches to HBase Prior to February 2012
$ ls /opt/mapr/hbase/hbase-0.92.1/ bin hbase-0.92.1.jar LICENSE.txt pom.xml CHANGES.txt hbase-0.92.1-tests.jar logs README.txt conf hbase-webapps mapr-hbase-patches security conf.new lib NOTICE.txt src $ ls /opt/mapr/hbase/hbase-0.92.1/mapr-hbase-patches/ 0000-hbase-with-mapr.patch 0006-hbase-6285-fix.patch 0001-hbase-wait-for-fs+set-chunksize.patch 0007-hbase-6375-fix.patch 0002-hbase-source-env-vars.patch 0008-hbase-6455-fix.patch 0003-hbase-6158-fix.patch 0009-bug-7745-fix.patch 0004-hbase-6018-fix.patch Readme.txt 0005-hbase-6236-fix.patch