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Posted to issues@spark.apache.org by "Xiaoye Sun (JIRA)" <ji...@apache.org> on 2016/11/22 22:47:58 UTC

[jira] [Created] (SPARK-18548) OnlineLDAOptimizer reads the same broadcast data after deletion

Xiaoye Sun created SPARK-18548:
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             Summary: OnlineLDAOptimizer reads the same broadcast data after deletion
                 Key: SPARK-18548
                 URL: https://issues.apache.org/jira/browse/SPARK-18548
             Project: Spark
          Issue Type: Improvement
          Components: MLlib
    Affects Versions: 1.6.1
            Reporter: Xiaoye Sun
            Priority: Trivial


In submitMiniBatch() called by OnlineLDAOptimizer, broadcast variable expElogbeta is deleted before its use in the second time, which causes the executor reads the same large broadcast data twice. I suggest to move the broadcast data deletion (expElogbetaBc.unpersist()) later. 




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