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https://issues.apache.org/jira/browse/SPARK-23664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-23664.
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Resolution: Incomplete
> Add interface to collect query result through file iterator
> -----------------------------------------------------------
>
> Key: SPARK-23664
> URL: https://issues.apache.org/jira/browse/SPARK-23664
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.1.1, 2.3.0
> Reporter: zhoukang
> Priority: Major
> Labels: bulk-closed
>
> Currently, we use spark sql through jdbc.
> Result may cost much memory since we collect result and cached in memory for
> performance consideration.
> However,we can also add an API to collect result through file iterator(like
> parquet file iterator),we can avoid OOM of thriftserver for big query.
> Like below:
> {code:java}
> result.toLocalIteratorThroughFile.asScala
> {code}
> I will work on this if make sense!
> And in our internal cluster we have used this API for about a year.
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