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https://issues.apache.org/jira/browse/HIVE-10016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371002#comment-14371002
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Dong Chen commented on HIVE-10016:
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Thanks for your review! [~Ferd].
Yes, Parquet have a new instance there. The ReadSupport instance in Hive side
is just for providing some info for ParquetRecordReaderWrapper creation.
> Remove duplicated Hive table schema parsing in DataWritableReadSupport
> ----------------------------------------------------------------------
>
> Key: HIVE-10016
> URL: https://issues.apache.org/jira/browse/HIVE-10016
> Project: Hive
> Issue Type: Sub-task
> Reporter: Dong Chen
> Assignee: Dong Chen
> Attachments: HIVE-10016-parquet.patch
>
>
> In {{DataWritableReadSupport.init()}}, the table schema is created and its
> string format is set in conf. When construct the
> {{ParquetRecordReaderWrapper}} , the schema is fetched from conf and parsed
> several times.
> We could remove these schema parsing, and improve the speed of
> getRecordReader a bit.
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