Github user HyukjinKwon commented on the pull request: https://github.com/apache/spark/pull/12268#issuecomment-215274872 @hvanhovell Thank you for a close look! I think I need to change this title of this issue and JIRA because "better performance" might be too broad. The main purpose of this PR was, - Refactoring this to be consistent with JSON data source - Remove unnecessary conversion from `Iterator` to `Reader`. Could I please make some JIRAs and PRs for this in separate PRs or follow-ups if it makes sense?
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