MRUnit is a Java library that helps developers unit test Apache Hadoop
MapReduce jobs. Unit testing is a technique for improving project quality
and reducing overall costs by writing a small amount of code that can
automatically verify the software you write performs as intended. This is
considered a best practice in software development since it helps identify
defects early, before they're deployed to a production system.


  • The last release of Apache MRUnit was version 0.9.0-incubating, released on
    May 12, 2012 while in Incubation.
  • MRUnit is currently working on a 1.0.0 release.


  • Development activity continues as can be seen from the following report:
  • 20 JIRAs were resolved since September 1st
  • Mail traffic is largely on the DEV list. Messages since Sept 1st: dev 299, user 85
  • Dave Beech has stepped up as the 1.0.0 release manager.
  • Work continues on MRUNIT-69 which is a new/easier to use API


  • The composition of the committers and PMC members has not changed since
    the last report.
  • Currently there are:
  • Total of 30 subscribers to the developer list.
  • Total of 48 subscribers to the user list.
  • Total of 10 committers
  • Total of 10 PMC members


  • There are no issues requiring board attention at this time.
  • No labels