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Posted to dev@pig.apache.org by "Greg Phillips (JIRA)" <ji...@apache.org> on 2018/04/15 20:44:00 UTC

[jira] [Updated] (PIG-5338) Prevent deep copy of DataBag into Jython List

     [ https://issues.apache.org/jira/browse/PIG-5338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Greg Phillips updated PIG-5338:
-------------------------------
    Attachment: PIG-5338.patch

> Prevent deep copy of DataBag into Jython List
> ---------------------------------------------
>
>                 Key: PIG-5338
>                 URL: https://issues.apache.org/jira/browse/PIG-5338
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Greg Phillips
>            Assignee: Greg Phillips
>            Priority: Major
>         Attachments: PIG-5338.patch
>
>
> Pig Python UDFs currently perform deep copies on Bags converting them into Jython PyLists. This can cause Jython UDFs to run out of memory and fail. A Jython DataBag which extends PyList could allow for iterative access to DataBag elements, while only performing a deep copy when necessary.



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