Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/10750#issuecomment-171513129
Since `source.Filter` is shared with Parquet, ORC and etc., I think this
might have to resolve the arithmetic operators in `DataSourceStrategy` itself.
AFAIK, Parquet and ORC does not support arithmetic operators and they might
anyway have to convert in Spark-side in the future if we support this in this
way. So, for this case, I think the operators might have to be resolved in here.
I believe we might better resolve this issue by modifying `CytalstScan` as
suggested by @liancheng in
[SPARK-9182](https://issues.apache.org/jira/browse/SPARK-9182) and filed
[SPARK-12126](https://issues.apache.org/jira/browse/SPARK-12126)
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