[jira] [Assigned] (HIVE-22330) Maximize smallBuffer usage in BytesColumnVector

["Karen Coppage (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-22330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karen Coppage reassigned HIVE-22330:
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> Maximize smallBuffer usage in BytesColumnVector
> -----------------------------------------------
>
>                 Key: HIVE-22330
>                 URL: https://issues.apache.org/jira/browse/HIVE-22330
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 4.0.0
>            Reporter: Karen Coppage
>            Assignee: Karen Coppage
>            Priority: Major
>
> When BytesColumnVector is populated with values, it either creates a new (byte[]) buffer object to help take the values, but if the values array is <=1MB, then instead of creating a new buffer it reuses a single "smallBuffer". Every time the smallBuffer is too small for the data we want to store there, the size is doubled; when the size ends up larger than 1 GB (or Integer.MAX_VALUE / 2) then the next time we try to double the size, overflow occurs and an error is thrown.
> A quick fix here is to set the smallBuffer size to Integer.MAX_VALUE in this case.



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