Jenkins build is still unstable: Mahout-Quality #1601

See https://builds.apache.org/job/Mahout-Quality/1601/

Jenkins build is back to normal : Mahout-Examples-Cluster-Reuters #179

See https://builds.apache.org/job/Mahout-Examples-Cluster-Reuters/179/changes

Jenkins build is still unstable: Mahout-Quality #1602

See https://builds.apache.org/job/Mahout-Quality/changes