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https://issues.apache.org/jira/browse/HIVE-20917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17889952#comment-17889952
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yongzhi.shao edited comment on HIVE-20917 at 10/16/24 6:23 AM:
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[~zhangbutao]
hello. can we reopen this?
We've been using this PR a lot in our production environment and it seems to
work well.And it's just a small feature, we should merge it.
was (Author: lisoda):
[~zhangbutao]
hello. can we reopen this?
> OpenCSVSerde quotes all columns
> -------------------------------
>
> Key: HIVE-20917
> URL: https://issues.apache.org/jira/browse/HIVE-20917
> Project: Hive
> Issue Type: Improvement
> Components: Serializers/Deserializers
> Reporter: nicolas paris
> Assignee: zongyu wu
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The OpenCSVSerde produces a CSV with all its columns quoted
> no matter of they type or if the string columns contain a separator or not.
>
> The problem is some readers (such postgresql) are not compatible with
> such CSV, in particular when bulk loading them thought COPY statement.
>
> I propose a new CsvSerde, based on a Univocity Parser (wich is used by Apache
> Spark)
> that has been described a 2 times faster thant OpenCSV.
> [https://github.com/uniVocity/csv-parsers-comparison] . This new CsvSerde
> whould only quote columns when needed.
>
> Regards,
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