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https://issues.apache.org/jira/browse/HIVE-545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Edward Capriolo resolved HIVE-545.
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Resolution: Duplicate
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> Use ArrayList instead of Vector in single-threaded Hive code
> ------------------------------------------------------------
>
> Key: HIVE-545
> URL: https://issues.apache.org/jira/browse/HIVE-545
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 0.4.0
> Reporter: Zheng Shao
> Attachments: HIVE-545.patch
>
>
> Most of the Hive code is single-threaded, but sometimes we are using Vector
> instead of the more efficient ArrayList.
> See http://java.sun.com/j2se/1.5.0/docs/api/java/util/ArrayList.html
> "This class (ArrayList) is roughly equivalent to Vector, except that it is
> unsynchronized."
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