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From "Patrick Wendell (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-2856) Decrease initial buffer size for Kryo to 64KB
Date Thu, 07 Aug 2014 00:04:12 GMT

     [ https://issues.apache.org/jira/browse/SPARK-2856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Wendell resolved SPARK-2856.
------------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1.0

[~rxin] think you forgot to close this so I'm closing it now.

> Decrease initial buffer size for Kryo to 64KB
> ---------------------------------------------
>
>                 Key: SPARK-2856
>                 URL: https://issues.apache.org/jira/browse/SPARK-2856
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Matei Zaharia
>            Assignee: Reynold Xin
>             Fix For: 1.1.0
>
>
> SPARK-2543 allowed us to have a max size for Kryo buffers that's bigger than the initial
one, so there's no need to start the initial one at 2 MB. Instead I'd give it support for
fractional values and start it as low as 0.1 MB, or even 0.065 (65 KB). It will avoid a lot
of unnecessary memory allocation in hash-based shuffle.



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