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https://issues.apache.org/jira/browse/BEAM-3293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Burke updated BEAM-3293:
-------------------------------
Description:
Add InputKinds LazyMap and LazyMultiMap that allow map lookup without reading
everything to memory. They will be accessed through functions such as:
func(k string) int
func(k string) []int
On the execution layer, the new forms would need to be added to
exec/sideinput.go
https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/runtime/exec/sideinput.go
The inputs layer, for the actual abstraction using reflection:
https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/runtime/exec/input.go
The funcx package would need to be updated to detect the new parameter forms
and so on.
https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/funcx/fn.go
If implemented pre-generics, the code generator front end, and backend would
need to be updated to detect and generate code for efficient no-reflection
overhead map access functions.
https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/util/shimx/generate.go
https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/util/starcgenx/starcgenx.go
was:
Add InputKinds LazyMap and LazyMultiMap that allow map lookup without reading
everything to memory. They will be accessed through functions such as:
func(k string) int
func(k string) []int
> Add lazy map side input form
> ----------------------------
>
> Key: BEAM-3293
> URL: https://issues.apache.org/jira/browse/BEAM-3293
> Project: Beam
> Issue Type: Improvement
> Components: sdk-go
> Reporter: Henning Rohde
> Priority: P3
>
> Add InputKinds LazyMap and LazyMultiMap that allow map lookup without reading
> everything to memory. They will be accessed through functions such as:
> func(k string) int
> func(k string) []int
> On the execution layer, the new forms would need to be added to
> exec/sideinput.go
> https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/runtime/exec/sideinput.go
>
> The inputs layer, for the actual abstraction using reflection:
> https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/runtime/exec/input.go
>
> The funcx package would need to be updated to detect the new parameter forms
> and so on.
> https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/core/funcx/fn.go
> If implemented pre-generics, the code generator front end, and backend would
> need to be updated to detect and generate code for efficient no-reflection
> overhead map access functions.
> https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/util/shimx/generate.go
>
> https://github.com/apache/beam/blob/master/sdks/go/pkg/beam/util/starcgenx/starcgenx.go
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