Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/3272#discussion_r99615295
--- Diff: docs/dev/stream/state.md ---
@@ -126,8 +136,8 @@ To get a state handle, you have to create a
`StateDescriptor`. This holds the na
(as we will see later, you can create several states, and they have to
have unique names so
that you can reference them), the type of the values that the state holds,
and possibly
a user-specified function, such as a `ReduceFunction`. Depending on what
type of state you
-want to retrieve, you create either a `ValueStateDescriptor`, a
`ListStateDescriptor` or
-a `ReducingStateDescriptor`.
+want to retrieve, you create either a `ValueStateDescriptor`, a
`ListStateDescriptor`,
+`ReducingStateDescriptor` or a `FoldingStateDescriptor`.
--- End diff --
**a** `ReducingStateDescriptor`**,** or a ...
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