[SPARK-12685] [MLlib] word2vec trainWordsCount gets overflow #10627
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jira: https://issues.apache.org/jira/browse/SPARK-12685
the log of
word2vecreportstrainWordsCount = -785727483
during computation over a large dataset.
Update the priority as it will affect the computation process.
alpha = learningRate * (1 - numPartitions * wordCount.toDouble / (trainWordsCount + 1))