jrmccluskey commented on a change in pull request #15594:
URL: https://github.com/apache/beam/pull/15594#discussion_r716978714
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File path: sdks/go/pkg/beam/core/runtime/exec/fn.go
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@@ -277,11 +278,33 @@ func makeSideInputs(ctx context.Context, w typex.Window,
side []SideInputAdapter
offset := len(param) - len(side)
var ret []ReusableInput
+ var cache *statecache.SideInputCache
+ if reader != nil {
Review comment:
There are multiple tests in the exec package that don't provide a
reader, so I spent a bit of time eliminating null references. I'll take some
time to clean this up and make it cleaner.
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