acrites commented on a change in pull request #11271: [BEAM-9624] Adds Convert
to Accumulators operator for use in combiner lifting for streaming pipelines
URL: https://github.com/apache/beam/pull/11271#discussion_r401825184
##########
File path: sdks/go/pkg/beam/core/runtime/exec/combine_test.go
##########
@@ -113,6 +113,40 @@ func TestLiftedCombine(t *testing.T) {
}
+// TestConvertToaccumulators verifies that if we just do ConvertToAccumulators
instead
+// of LiftedCombine before the GBK we still get the right answer.
+func TestConvertToAccumulators(t *testing.T) {
+ withCoder := func(t *testing.T, suffix string, key interface{},
keyCoder *coder.Coder) {
+ for _, test := range tests {
+ t.Run(fnName(test.Fn)+"_"+suffix, func(t *testing.T) {
+ edge := getCombineEdge(t, test.Fn,
reflectx.Int, test.AccumCoder)
+
+ out := &CaptureNode{UID: 1}
+ extract := &ExtractOutput{Combine:
&Combine{UID: 2, Fn: edge.CombineFn, Out: out}}
+ merge := &MergeAccumulators{Combine:
&Combine{UID: 3, Fn: edge.CombineFn, Out: extract}}
+ gbk := &simpleGBK{UID: 4, KeyCoder: keyCoder,
Out: merge}
+ convertToAccumulators :=
&ConvertToAccumulators{Combine: &Combine{UID: 5, Fn: edge.CombineFn, Out: gbk}}
Review comment:
Good point. Updated the test.
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