[jira] Updated: (PIG-1427) Monitor and kill runaway UDFs

["Dmitriy V. Ryaboy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitriy V. Ryaboy updated PIG-1427:
-----------------------------------

    Attachment: guava-r03.jar

Attaching the guava jar that needs to be placed in lib/ in order to test this.
It is theoretically available via maven, but at the moment the deploy to maven is misconfigured and unfetchable (see above reference).

The guava library is licensed under Apache 2.0: http://code.google.com/p/guava-libraries/



> Monitor and kill runaway UDFs
> -----------------------------
>
>                 Key: PIG-1427
>                 URL: https://issues.apache.org/jira/browse/PIG-1427
>             Project: Pig
>          Issue Type: New Feature
>    Affects Versions: 0.8.0
>            Reporter: Dmitriy V. Ryaboy
>            Assignee: Dmitriy V. Ryaboy
>         Attachments: guava-r03.jar, monitoredUdf.patch, monitoredUdf.patch
>
>
> As a safety measure, it is sometimes useful to monitor UDFs as they execute. It is often preferable to return null or some other default value instead of timing out a runaway evaluation and killing a job. We have in the past seen complex regular expressions lead to job failures due to just half a dozen (out of millions) particularly obnoxious strings.
> It would be great to give Pig users a lightweight way of enabling UDF monitoring.

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