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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4472) OR, NOT Filter logic can lose an array, and always takes time O(VectorizedRowBatch.DEFAULT_SIZE)
Date Mon, 20 May 2013 23:23:16 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jitendra Nath Pandey updated HIVE-4472:
---------------------------------------

    Status: Patch Available  (was: Open)
    
> OR, NOT Filter logic can lose an array, and always takes time O(VectorizedRowBatch.DEFAULT_SIZE)
> ------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4472
>                 URL: https://issues.apache.org/jira/browse/HIVE-4472
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Eric Hanson
>            Assignee: Jitendra Nath Pandey
>         Attachments: HIVE-4472.1.patch, HIVE-4472.2.patch, HIVE-4472.3.patch, HIVE-4472.4.patch
>
>
> The issue is in file FilterExprOrExpr.java and FilterNotExpr.java.
> I posted a review for you at 
> https://reviews.apache.org/r/10752/
> I think there is a bug related to sharing of an array of integers. Also, one algorithm
step takes O(DEFAULT_BATCH_SIZE) time always. If n<<DEFAULT_BATCH_SIZE then this is
a performance issue. 

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