Tests run: 18, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 94.993 sec <<<
FAILURE!
testRemoval[0](org.apache.mahout.math.neighborhood.SearchSanityTest) Time
elapsed: 9.111 sec <<< FAILURE!
java.lang.AssertionError: Previous second neighbor should be first
expected:<0.0> but was:<18.628072505922006>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:743)
at org.junit.Assert.assertEquals(Assert.java:494)
at
org.apache.mahout.math.neighborhood.SearchSanityTest.testRemoval(SearchSanityTest.java:166)
I only see it when running all tests from core.