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Posted to dev@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2014/09/19 08:37:33 UTC

[jira] [Updated] (HIVE-8188) ExprNodeGenericFuncEvaluator::_evaluate() loads class annotations in a tight loop

     [ https://issues.apache.org/jira/browse/HIVE-8188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gopal V updated HIVE-8188:
--------------------------
    Attachment: udf-deterministic.png

> ExprNodeGenericFuncEvaluator::_evaluate() loads class annotations in a tight loop
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-8188
>                 URL: https://issues.apache.org/jira/browse/HIVE-8188
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>    Affects Versions: 0.14.0
>            Reporter: Gopal V
>         Attachments: udf-deterministic.png
>
>
> When running a near-constant UDF, most of the CPU is burnt within the VM trying to read the class annotations for every row.
> !udf-deterministic.png!



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