apache/incubator-spark — pull request #645 by mengxr (2014-02-25 02:11:02+00:00)
Title: SPARK-1129: use a predefined seed when seed is zero in XORShiftRandom

If the seed is zero, XORShift generates all zeros, which would create unexpected result.

JIRA: https://spark-project.atlassian.net/browse/SPARK-1129