Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/948#issuecomment-45046324
@marmbrus Agree. I'll try to remove the `lazy` qualifier of
`SchemaRDD.queryExecution` since the field object itself is rather cheap (all
of its fields are lazy), and then call the `process()` method in
`QueryExecution` constructor to evaluate native commands eagerly.
@concretevitamin `InsertIntoHiveTable` and `InsertIntoParquetTable` are
physical operations, which are parts of physical plans. However, we only need
to take care of logical plan here. `InsertIntoTable` and
`InsertIntoCreatedTable` are translated into those physical operators after
logical plan optimization.
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