eaton created SPARK-26312:
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Summary: Converting converters in RDDConversions into arrays to
improve their access performance
Key: SPARK-26312
URL: https://issues.apache.org/jira/browse/SPARK-26312
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: eaton
`RDDConversions` would get disproportionately slower as the number of columns
in the query increased.
This PR converts the `converters` in `RDDConversions` into arrays to improve
their access performance, the type of `converters` before is
`scala.collection.immutable.::` which is a subtype of list.
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