Mrunit: how to set value comparator for MultiOutput test

Question

is there a way to set key/value Comparator to test MultiOutput in mrunit?

Based on my analysis: The mrunit doesn't use key/value Comparators to test the equality of expected and actual values of multioutput.The key/value comparators are only used for single output key and value comparison.

The TestDriver class has separate methods for the single output and multioutput, which compares the expected and actual results.

validate(single outputs, orderMatters);
validate(multioutput);

Answer 1

This is a known problem with mrunit and is not fixed in a released version as of 1.1.0. See the jira: https://issues.apache.org/jira/browse/MRUNIT-224 Potentially you could use the patch there to build your own version of mrunit.