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From "Patrick Wendell (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-3694) Allow printing object graph of tasks/RDD's with a debug flag
Date Sun, 18 Jan 2015 07:40:34 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Wendell resolved SPARK-3694.
------------------------------------
    Resolution: Duplicate

> Allow printing object graph of tasks/RDD's with a debug flag
> ------------------------------------------------------------
>
>                 Key: SPARK-3694
>                 URL: https://issues.apache.org/jira/browse/SPARK-3694
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>            Reporter: Patrick Wendell
>            Assignee: Ilya Ganelin
>              Labels: starter
>
> This would be useful for debugging extra references inside of RDD's
> Here is an example for inspiration:
> http://ehcache.org/xref/net/sf/ehcache/pool/sizeof/ObjectGraphWalker.html
> We'd want to print this trace for both the RDD serialization inside of the DAGScheduler
and the task serialization in the TaskSetManager.



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