Github user viirya commented on the issue:
https://github.com/apache/spark/pull/19813
I'm wondering if an output statement like `a + 1` is a problem.
If we only include codegen output with valid java variable names, an output
like `a + 1` won't be included as parameter. We only need to make sure the
creation of `ExprCode` in `genCode` has correctly linked with its input row and
variables (this is done in this PR). So an output like `a + 1` depends on other
input `a`. This `a` will be included as parameter if necessary.
cc @cloud-fan @kiszk @mgaido91 WDYT? Or do I miss something?
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