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https://issues.apache.org/jira/browse/HIVE-502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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He Yongqiang updated HIVE-502:
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Attachment: hive-502-2009-05-22.patch
Fix a typo in class HiveDataInputBuffer's comment. Thanks, Zheng.
> Optimize RCFile's performance by removeing all synchronized modifiers
> ---------------------------------------------------------------------
>
> Key: HIVE-502
> URL: https://issues.apache.org/jira/browse/HIVE-502
> Project: Hadoop Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: He Yongqiang
> Assignee: He Yongqiang
> Attachments: hive-502-2009-05-21.patch, hive-502-2009-05-22.patch
>
>
> Tests by Zheng and me both show that removing all synchronized modifiers can
> improve RCFile's performance by about 15+%.
> This will make RCFile's reader and writer not thread safe any longer. This
> will be ok,since hive always does its work in single thread.
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