[jira] [Created] (KYLIN-2893) Missing zero check for totalHitFrequency in CuboidStats ctor

[Ted Yu (JIRA)]

Ted Yu created KYLIN-2893:
-----------------------------

             Summary: Missing zero check for totalHitFrequency in CuboidStats 
ctor
                 Key: KYLIN-2893
                 URL: https://issues.apache.org/jira/browse/KYLIN-2893
             Project: Kylin
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


{code}
                if (hitFrequencyMap.get(cuboid) != null) {
                    tmpCuboidHitProbabilityMap.put(cuboid, unitUncertainProb
                            + (1 - WEIGHT_FOR_UN_QUERY) * 
hitFrequencyMap.get(cuboid) / totalHitFrequency);
{code}
We should check that totalHitFrequency is not zero before performing division.



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