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From "Xiangrui Meng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-7337) FPGrowth algo throwing OutOfMemoryError
Date Thu, 25 Jun 2015 15:24:04 GMT

    [ https://issues.apache.org/jira/browse/SPARK-7337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14601348#comment-14601348
] 

Xiangrui Meng commented on SPARK-7337:
--------------------------------------

How large is the `minSupport`? The number of frequent itemsets grows exponentially as minSupport
decreases. So please start with a really large value (close to 1.0) and gradually reduce it.

> FPGrowth algo throwing OutOfMemoryError
> ---------------------------------------
>
>                 Key: SPARK-7337
>                 URL: https://issues.apache.org/jira/browse/SPARK-7337
>             Project: Spark
>          Issue Type: Bug
>          Components: MLlib
>    Affects Versions: 1.3.1
>         Environment: Ubuntu
>            Reporter: Amit Gupta
>         Attachments: FPGrowthBug.png
>
>
> When running FPGrowth algo with huge data in GBs and with numPartitions=500 then after
some time it throws OutOfMemoryError.
> Algo runs correctly upto "collect at FPGrowth.scala:131" where it creates 500 tasks.
It fails at next stage "flatMap at FPGrowth.scala:150" where it fails to create 500 tasks
and create some internal calculated 17 tasks.
> Please refer to attachment - print screen.



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