wolfstudy commented on a change in pull request #11335:
URL: https://github.com/apache/pulsar/pull/11335#discussion_r671105663
##########
File path: site2/docs/functions-worker.md
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@@ -42,6 +42,38 @@ If authentication is enabled on the BookKeeper cluster,
configure the following
- `bookkeeperClientAuthenticationParametersName`: the BookKeeper client
authentication plugin parameters name.
- `bookkeeperClientAuthenticationParameters`: the BookKeeper client
authentication plugin parameters.
+### Configure Stateful-Functions to run with broker
+
+If you want to use Stateful-Functions related functions, for example, if you
want to use `putState()` and `queryState()` related interfaces.
+
+1. You need to enable the **streamStorage** service in the bookkeeper.
Currently, the service uses the form of loading the nar package, so you need to
configure the following in `bookkeeper.conf`:
+
+```text
+extraServerComponents=org.apache.bookkeeper.stream.server.StreamStorageLifecycleComponent
+```
+
+After bookie is started, you can use the following methods to check whether
the streamStorage service is started correctly:
+
+```shell
+telnet localhost 4181
+```
+
+Output:
+
+```text
+Trying 127.0.0.1...
+Connected to localhost.
+Escape character is '^]'.
+```
+
+2. Turn on this function in `functions_worker.yml`, as follows:
+
+```text
+stateStorageServiceUrl: bk://<bk-service-url>:4181
+```
+
+- bk-service-url: the service url points to bookkeeper table service.
Review comment:
Cool
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