[GitHub] [pulsar] Jennifer88huang commented on a change in pull request #4263: [docs] Documentation on configuring functions runtime

[GitBox <gi...@apache.org>]

Jennifer88huang commented on a change in pull request #4263: [docs] Documentation on configuring functions runtime
URL: https://github.com/apache/pulsar/pull/4263#discussion_r283167806
 
 

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 File path: site2/docs/functions-runtime.md
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+---
+id: functions-runtime
+title: Configure Functions runtime
+sidebar_label: Configure Functions runtime
+---
+
+Currently, Pulsar Functions supports running functions in three runtimes.
+
+- *Thread*: Invoke functions in threads in Functions Worker.
+- *Process*: Invoke functions in processes forked by Functions Worker.
+- *Kubernetes*: Submit functions as Kubernetes StatefulSets by Functions Worker.
+
+## Configure Thread runtime
+
+*Thread* runtime is the most simplest runtime to configure. At most of the time, you don't need
+to configure anything. You can customize the thread group name by setting following settings:
+
+```yaml
+threadContainerFactory:
+  threadGroupName: "Your Function Container Group"
+```
+
+*Thread* runtime only supports Java language.
+
+## Configure Process runtime
+
+Similar as *Thread* runtime, at most of the time, you don't need to configure anything special when
+enabling *Process* runtime.
+
+```yaml
+processContainerFactory:
+  # the directory for storing the function logs
+  logDirectory:
+  # change the jar location only when you put the java instance jar in a different location
+  javaInstanceJarLocation:
+  # change the python instance location only when you put the python instance jar in a different location
+  pythonInstanceLocation:
+  # change the extra dependencies location:
+  extraFunctionDependenciesDir:
+```
+
+Currently Pulsar supports running Java, Python, and Go functions in Process runtime mode.
+
+## Configure Kubernetes runtime
+
+Configuring Kubernetes runtime is as simple as configuring the other two runtimes. You can just uncomment
 
 Review comment:
   What's the meaning of "uncomment"?

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