diff --git a/docs/_config.yml b/docs/_config.yml
index 3be9807f81082..cd341063a1f92 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -26,3 +26,15 @@ SCALA_VERSION: "2.12.10"
 MESOS_VERSION: 1.0.0
 SPARK_ISSUE_TRACKER_URL: https://issues.apache.org/jira/browse/SPARK
 SPARK_GITHUB_URL: https://github.com/apache/spark
+# Before a new release, we should apply a new `apiKey` for the new Spark documentation
+# on https://docsearch.algolia.com/. Otherwise, after release, the search results are always based
+# on the latest documentation(https://spark.apache.org/docs/latest/) even when visiting the
+# documentation of previous releases.
+DOCSEARCH_SCRIPT: |
+  docsearch({
+      apiKey: 'b18ca3732c502995563043aa17bc6ecb',
+      indexName: 'apache_spark',
+      inputSelector: '#docsearch-input',
+      enhancedSearchInput: true,
+      debug: false // Set debug to true if you want to inspect the dropdown
+  });
diff --git a/docs/_layouts/global.html b/docs/_layouts/global.html
index 65af17ed2e4a1..de98f29acf3b7 100755
--- a/docs/_layouts/global.html
+++ b/docs/_layouts/global.html
@@ -187,13 +187,7 @@ <h1 class="title">{{ page.title }}</h1>
             // 2. a JavaScript snippet to be inserted in your website that will bind this Algolia index
             //    to your search input and display its results in a dropdown UI. If you want to find more
             //    details on how works DocSearch, check the docs of DocSearch.
-            docsearch({
-                apiKey: 'b18ca3732c502995563043aa17bc6ecb',
-                indexName: 'apache_spark',
-                inputSelector: '#docsearch-input',
-                enhancedSearchInput: true,
-                debug: false // Set debug to true if you want to inspect the dropdown
-        });
+            {{site.DOCSEARCH_SCRIPT}}
         </script>
 
         <!-- MathJax Section -->