[SPARK-16100][SQL] fix bug when use Map as the buffer type of Aggregator #13835
+32
−11
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What changes were proposed in this pull request?
The root cause is in
MapObjects. Its parameterloopVaris not declared as child, but sometimes can be same withlambdaFunction(e.g. the function that takesloopVarand produceslambdaFunctionmay beidentity), which is a child. This brings trouble when callwithNewChildren, it may mistakenly treatloopVaras a child and causeIndexOutOfBoundsException: 0later.This PR fixes this bug by simply pulling out the paremters from
LambdaVariableand pass them toMapObjectsdirectly.How was this patch tested?
new test in
DatasetAggregatorSuite