Update docs only for actively maintained versions (#843)

* Update docs only for actively maintained versions

* Minor upd

contribute/document-contribution.md

@@ -11,7 +11,11 @@ Currently, the source of documents and website (where the docs are finally publi
 
 ## Update versioned docs
 
-If you want to update versioned docs, go to [versioned_docs folder](https://github.com/apache/pulsar-site/tree/main/versioned_docs) to find your desired one.
+Documentation should be up to date for all [actively supported versions](https://pulsar.apache.org/contribute/release-policy/#supported-versions).
+
+No need to update documentation for versions that are not actively maintained unless the documentation is incorrect.
+
+To update versioned docs, go to [versioned_docs folder](https://github.com/apache/pulsar-site/tree/main/versioned_docs).
 
 For versions prior to 2.8, Pulsar releases versioned docs for each patch release. You can update the exact versioned doc.
 

contribute/release-process.md

@@ -607,7 +607,22 @@ Read more on the manual of [pytools](https://github.com/apache/pulsar-site/tree/
 
 If you're working on a patch release for an older feature version of Pulsar, you can skip this step.
 
-Otherwise, you should update the version in this file: https://github.com/apache/pulsar-site/blob/26671a6ce02ed529eb26072846aedf14e4ab31a5/static/.htaccess#L19
+Otherwise, you should update the version in this file: <https://github.com/apache/pulsar-site/blob/26671a6ce02ed529eb26072846aedf14e4ab31a5/static/.htaccess#L19>
+
+## Update `/docs` version list dropdown
+
+The dropdown should have the following items:
+- Next
+- Active versions [still in support](/contribute/release-policy/#supported-versions)
+- Others
+
+LTS versions should be labeled this way: `<version> LTS`.
+
+<img alt="docs version dropdown" src="/img/version-dropdown.png" width="320px" />
+
+If you're working on a patch release for an older feature version of Pulsar, you can skip this step.
+
+Otherwise, you should update the dropdown version list in this file: <https://github.com/apache/pulsar-site/blob/main/src/theme/DocsVersionDropdownNavbarItem.js>
 
 ## Announce the release
 

src/theme/DocsVersionDropdownNavbarItem.js

@@ -7,27 +7,32 @@
 import React from "react";
 import DefaultNavbarItem from "@theme/NavbarItem/DefaultNavbarItem";
 import DropdownNavbarItem from "@theme/NavbarItem/DropdownNavbarItem";
-import {useActiveDocContext, useLatestVersion,} from "@docusaurus/plugin-content-docs/client";
-import {useDocsPreferredVersion} from "@docusaurus/theme-common";
-import {translate} from "@docusaurus/Translate";
+import { useActiveDocContext, useLatestVersion, } from "@docusaurus/plugin-content-docs/client";
+import { useDocsPreferredVersion } from "@docusaurus/theme-common";
+import { translate } from "@docusaurus/Translate";
 
-let versions = require("../../versions.json");
-versions = [{ name: "current", label: "Next", path: "/docs/next" }]
-  .concat(
-    versions.map((item) => {
-      return {
-        label: item,
-        name: item,
-        path: "/docs/" + item,
-      };
-    })
-  )
-  .slice(0, 5)
-  .concat({
+const versions = [
+  {
+    name: "current",
+    label: "Next",
+    path: "/docs/next"
+  },
+  {
+    label: '3.2.x',
+    name: '3.2.x',
+    path: `/docs/3.2.x`,
+  },
+  {
+    label: '3.0.x LTS',
+    name: '3.0.x',
+    path: `/docs/3.0.x`,
+  },
+  {
     name: "others",
     label: "Others",
     path: "/versions",
-  });
+  }
+];
 
 const getVersionMainDoc = (version) =>
   version.docs.find((doc) => doc.id === version.mainDocId);
@@ -74,11 +79,11 @@ export default function DocsVersionDropdownNavbarItem({
   const dropdownLabel =
     mobile && items.length > 1
       ? translate({
-          id: "theme.navbar.mobileVersionsDropdown.label",
-          message: "Versions",
-          description:
-            "The label for the navbar versions dropdown on mobile view",
-        })
+        id: "theme.navbar.mobileVersionsDropdown.label",
+        message: "Versions",
+        description:
+          "The label for the navbar versions dropdown on mobile view",
+      })
       : dropdownVersion.label;
   const dropdownTo =
     mobile && items.length > 1