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https://issues.apache.org/jira/browse/SPARK-14551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-14551.
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Resolution: Fixed
Assignee: Rajesh Balamohan
Fix Version/s: 2.0.0
> Reduce number of NameNode calls in OrcRelation with FileSourceStrategy mode
> ---------------------------------------------------------------------------
>
> Key: SPARK-14551
> URL: https://issues.apache.org/jira/browse/SPARK-14551
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Minor
> Fix For: 2.0.0
>
>
> When FileSourceStrategy is used, record reader is created which incurs a NN
> call internally. Later in OrcRelation.unwrapOrcStructs, it ends ups reading
> the file information to get the ObjectInspector. This incurs additional NN
> call. It would be good to avoid this additional NN call (specifically for
> partitioned datasets)
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