diff --git a/docs/development/extensions-core/lookups-cached-global.md b/docs/development/extensions-core/lookups-cached-global.md
index 7d9dffb2f1b..4872a0977c4 100644
--- a/docs/development/extensions-core/lookups-cached-global.md
+++ b/docs/development/extensions-core/lookups-cached-global.md
@@ -347,7 +347,6 @@ The JDBC lookups will poll a database to populate its local cache. If the `tsCol
 
 |Parameter|Description|Required|Default|
 |---------|-----------|--------|-------|
-|`namespace`|The namespace to define|Yes||
 |`connectorConfig`|The connector config to use|Yes||
 |`table`|The table which contains the key value pairs|Yes||
 |`keyColumn`|The column in `table` which contains the keys|Yes||
@@ -359,7 +358,6 @@ The JDBC lookups will poll a database to populate its local cache. If the `tsCol
 ```json
 {
   "type":"jdbc",
-  "namespace":"some_lookup",
   "connectorConfig":{
     "createTables":true,
     "connectURI":"jdbc:mysql://localhost:3306/druid",
@@ -377,7 +375,8 @@ The JDBC lookups will poll a database to populate its local cache. If the `tsCol
 > If using JDBC, you will need to add your database's client JAR files to the extension's directory.
 > For Postgres, the connector JAR is already included.
 > For MySQL, you can get it from https://dev.mysql.com/downloads/connector/j/.
-> Copy or symlink the downloaded file to `extensions/druid-lookups-cached-global` under the distribution root directory.
+> The connector JAR should reside in the classpath of Druid's main class loader.
+> To add the connector JAR to the classpath, you can copy the downloaded file to `lib/` under the distribution root directory. Alternatively, create a symbolic link to the connector in the `lib` directory.
 
 ## Introspection