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https://issues.apache.org/jira/browse/HIVE-1801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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He Yongqiang updated HIVE-1801:
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Status: Open (was: Patch Available)
> HiveInputFormat or CombineHiveInputFormat always sync blocks of RCFile twice
> ----------------------------------------------------------------------------
>
> Key: HIVE-1801
> URL: https://issues.apache.org/jira/browse/HIVE-1801
> Project: Hive
> Issue Type: Improvement
> Reporter: Siying Dong
> Assignee: Siying Dong
> Attachments: HIVE-1801.1.patch
>
>
> HiveInputFormat or CombineHiveInputFormat RCFile.Reader.sync() twice. One in
> getReader() and one in initIOContext(). We can avoid the latter one by read
> the sync() position of the former one.
> We also sync() twice for SequenceFile but since SequenceFileReader is not a
> part of Hive code, maybe we should be careful when depending on the
> implementation.
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