Hyukjin Kwon created SPARK-16674:
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Summary: Avoid per-record type dispatch in JDBC when reading
Key: SPARK-16674
URL: https://issues.apache.org/jira/browse/SPARK-16674
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.1.0
Reporter: Hyukjin Kwon
This is similar with https://issues.apache.org/jira/browse/SPARK-16434
Currently, {{JDBCRDD.compute}} is doing type dispatch for each row to read
appropriate values.
It might not have to be done like this because the schema is already kept in
{{JDBCRDD}}.
So, appropriate converters can be created first according to the schema, and
then apply them to each row.
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