soyrice commented on a change in pull request #11415: [BEAM-9650] Cleanup
documentation on side inputs patterns
URL: https://github.com/apache/beam/pull/11415#discussion_r408943766
##########
File path: website/src/documentation/patterns/side-inputs.md
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@@ -46,29 +54,36 @@ For instance, the following code sample uses a `Map` to
create a `DoFn`. The `Ma
{% github_sample
/apache/beam/blob/master/examples/java/src/main/java/org/apache/beam/examples/snippets/Snippets.java
tag:SideInputPatternSlowUpdateGlobalWindowSnip1
%}
```
+```py
+No sample present.
+```
## Slowly updating side input using windowing
-You can read side input pcollection periodically into distinct windows.
-Later, when you apply side input to your main input, windows will be matched
automatically 1:1.
-This way, you can guarantee side input consistency on the duration of the
single window.
+You can read side input data periodically into distinct PCollection windows.
+Later, when you apply the side input to your main input, each main input
+window is automatically matched to a single side input window.
+This guarantees consistency on the duration of the single window,
+meaning that each window on the main input will be matched to a single
+version of side input data.
-To do this, you can utilize PeriodicSequence PTransform that will generate
infinite sequence
-of elements with some real-time period:
+Described approach can be implemented using combination of
Review comment:
How about something like this: "To read side input data periodically... use
a combination of PeriodicSequence..."
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