[jira] [Resolved] (SPARK-17286) The fetched data of Shuffle read stored in the ManagedBuffer, so its underlying data stored in off-memory or file?

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-17286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-17286.
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          Resolution: Invalid
    Target Version/s:   (was: 1.6.1)

user@ is the place for questions.

> The fetched data of Shuffle read  stored in the ManagedBuffer, so its underlying data stored in off-memory or file?
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-17286
>                 URL: https://issues.apache.org/jira/browse/SPARK-17286
>             Project: Spark
>          Issue Type: Question
>          Components: Block Manager, Input/Output, Shuffle
>            Reporter: song fengfei
>
> The fetched data of Shuffle read  stored in the ManagedBuffer, so its underlying data stored in off-memory or file? if stored in off-memory, Whether it is also managed by spark memorymanager ?  and if a map output is too big, placed it directly in the memory isn't very easily lead to oom? I did not understand this piece, hoping to get the answer here,thanks!



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