Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/11148#issuecomment-183624567
@rxin After searching the code base, all the samples are table sample.
Could you give me more hints? I also agree it looks brittle. I did my best to
make it more robust/general.
Since `TABLESAMPLE` is part of `tableSource` clause, I am facing two
options:
1. Simplify the logics in the case of `TABLESAMPLE` and put the extra
handling in `MetastoreRelation` and `Subquery`
2. Put all the logics in the case of `TABLESAMPLE`.
Let me know which option you like. Currently, I picked option 2.
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