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Posted to issues@spark.apache.org by "Reza Zadeh (JIRA)" <ji...@apache.org> on 2015/04/05 11:09:33 UTC

[jira] [Updated] (SPARK-6713) Iterators in columnSimilarities to allow flatMap spill

     [ https://issues.apache.org/jira/browse/SPARK-6713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reza Zadeh updated SPARK-6713:
------------------------------
    Description: We should use Iterators in columnSimilarities to allow mapPartitionsWithIndex to spill to disk. This could happen in a dense and large column - this way Spark can spill the pairs onto disk instead of building all the pairs before handing them to Spark.  (was: We should use Iterators in columnSimilarities to allow flatMap to spill to disk. This could happen in a dense and large column - this way Spark can spill the pairs onto disk instead of building all the pairs before handing them to Spark.)

> Iterators in columnSimilarities to allow flatMap spill
> ------------------------------------------------------
>
>                 Key: SPARK-6713
>                 URL: https://issues.apache.org/jira/browse/SPARK-6713
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Reza Zadeh
>
> We should use Iterators in columnSimilarities to allow mapPartitionsWithIndex to spill to disk. This could happen in a dense and large column - this way Spark can spill the pairs onto disk instead of building all the pairs before handing them to Spark.



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