What jira was this change added with? On Feb 1, 2016 11:42 PM, "Hsuan Yi Chu" <hyi...@maprtech.com> wrote:
> All the variants of Negative DrillFuncHolder are supposed to be > deterministic. However, when they are being registered > into DrillOperatorTable, there is a if-statement: > > > https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/DrillFunctionRegistry.java#L116 > > which claims DrillFuncHolder being non-deterministic when return type is > Interval. Why it is necessary to have this if-condition? > > ------------------------- > > Making DrillFuncHolder non-deterministic will prevent partition-pruing or > constant folding from happening. >
