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https://issues.apache.org/jira/browse/SPARK-25086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16577761#comment-16577761
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Hyukjin Kwon commented on SPARK-25086:
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I think this is a duplicate of SPARK-22236
> Incorrect Default Value For "escape" For CSV Files
> --------------------------------------------------
>
> Key: SPARK-25086
> URL: https://issues.apache.org/jira/browse/SPARK-25086
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: David Wilcox
> Priority: Major
>
> The RFC for CSV files ([https://tools.ietf.org/html/rfc4180]) indicates that
> the way that a double-quote is escaped is by preceding it with another
> double-quote:
> {code:java}
> 7. If double-quotes are used to enclose fields, then a double-quote appearing
> inside a field must be escaped by preceding it with another double quote. For
> example: "aaa","b""bb","ccc"{code}
> Your default value for "escape" violates the RFC. I think that we should fix
> the default value to be {{"}}, and those that want {{\}} to escape can
> override for non-RFC-conforming CSV files.
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