WeichenXu 4c9695598e [SPARK-16697][ML][MLLIB] improve LDA submitMiniBatch method to avoid redundant RDD computation ... ## What changes were proposed in this pull request? In `LDAOptimizer.submitMiniBatch`, do persist on `stats: RDD[(BDM[Double], List[BDV[Double]])]` and also move the place of unpersisting `expElogbetaBc` broadcast variable, to avoid the `expElogbetaBc` broadcast variable to be unpersisted too early, and update previous `expElogbetaBc.unpersist()` into `expElogbetaBc.destroy(false)` ## How was this patch tested? Existing test. Author: WeichenXu <WeichenXu123@outlook.com> Closes #14335 from WeichenXu123/improve_LDA.		2016-07-26 10:41:41 +01:00
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src	[SPARK-16697][ML][MLLIB] improve LDA submitMiniBatch method to avoid redundant RDD computation	2016-07-26 10:41:41 +01:00
pom.xml	[SPARK-16535][BUILD] In pom.xml, remove groupId which is redundant definition and inherited from the parent	2016-07-19 11:59:46 +01:00