Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/6228#discussion_r30625348
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/feature/Word2Vec.scala ---
@@ -158,6 +158,9 @@ class Word2Vec extends Serializable with Logging {
.sortWith((a, b) => a.cn > b.cn)
vocabSize = vocab.length
+ require(vocabSize > 0, "The vocabulary size should be large than 0.
You may need to check " +
--- End diff --
Sounds good. @yinxusen Sorry for asking you to revert your change, but can
you please stick with "require" per @srowen 's advice? Thank you!
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