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[SPARK-18612][MLLIB] Delete broadcasted variable in LBFGS CostFun #16040

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[SPARK-18612][MLLIB] Delete broadcasted variable in LBFGS CostFun #16040

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3 changes: 3 additions & 0 deletions mllib/src/main/scala/org/apache/spark/mllib/optimization/LBFGS.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,9 @@ object LBFGS extends Logging {
(grad1, loss1 + loss2)
})

// broadcasted model is not needed anymore
bcW.destroy()

/**
* regVal is sum of weight squares if it's L2 updater;
* for other updater, the same logic is followed.
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