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Posted to issues@spark.apache.org by "Jianfei Wang (JIRA)" <ji...@apache.org> on 2016/12/06 06:43:59 UTC
[jira] [Commented] (SPARK-18735) Why don't we destroy the broadcast
variable after each iteration?
[ https://issues.apache.org/jira/browse/SPARK-18735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15724605#comment-15724605 ]
Jianfei Wang commented on SPARK-18735:
--------------------------------------
oh no,I just see in Kmeans and GaussianMixture they both use destroy.
> Why don't we destroy the broadcast variable after each iteration?
> -----------------------------------------------------------------
>
> Key: SPARK-18735
> URL: https://issues.apache.org/jira/browse/SPARK-18735
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 2.0.2
> Reporter: Jianfei Wang
>
> I think we should destroy the broadcast variable bcWeights explicitly in spark.mllib.GradientDescent.runMiniBatchSGD
> see the code below:
> while (!converged && i <= numIterations) {
> val start = System.nanoTime()
> val bcWeights = data.context.broadcast(weights)
> // some other code
> }
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