Github user zhonghaihua commented on the pull request:
https://github.com/apache/spark/pull/10128#issuecomment-169231327
@marmbrus Thanks for your suggestions. I think your idea can simply solve
problem. But in some situations, this seems not very suitable.
For example:
`Join(testRelation, testRelation2, Inner,Some(And(EqualTo(a, b),
EqualTo(Rand(33) * c, d))))` If `c` is an attribute belong to `testRelation2`,
I think `Rand(33)` is more appropriately pulled out to the right child tree of
`Join`, otherwise, if belong to `testRelation`, it is appropriately pulled out
to left child tree.
When `nondeterministic expressions` is used with `table attribute`, I think
pull out it should depend on the attribute. What do you think?
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