Steve Carlin created IMPALA-14199:
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Summary: Better error message for unsupported functions
Key: IMPALA-14199
URL: https://issues.apache.org/jira/browse/IMPALA-14199
Project: IMPALA
Issue Type: Improvement
Reporter: Steve Carlin
For the Calcite planner, when there is an unsupported function (e.g.
ds_hll_sketch(smallint_col) ), the error message could be a bit better. The
error message shown is:
Cannot infer return type for DS_HLL_SKETCH; operand types:
[SMALLINT]
This makes it seem like the problem is Impala's problem, but the problem really
lies in what ds_hll_sketch supports.
I think this problem exists not just in the Calcite planner but also in the
existing code.
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