Fix whitespace and add comments on updates for anonymizing string fun…

…ction

Signed-off-by: forestmvey <forestv@bitquilltech.com>

docs/user/admin/settings.rst

@@ -111,13 +111,13 @@ Result set::
 	}
 	Query failed on both V1 and V2 SQL parser engines. V2 SQL parser error following:
 	{
-      "error": {
-        "reason": "Invalid SQL query",
-        "details": "Failed to parse query due to offending symbol [DELETE] at: 'DELETE' <--- HERE... More details: Expecting tokens in {<EOF>, 'DESCRIBE', 'SELECT', 'SHOW', ';'}",
-        "type": "SyntaxCheckException"
-      },
-      "status": 400
-    }
+	  "error": {
+	    "reason": "Invalid SQL query",
+	    "details": "Failed to parse query due to offending symbol [DELETE] at: 'DELETE' <--- HERE... More details: Expecting tokens in {<EOF>, 'DESCRIBE', 'SELECT', 'SHOW', ';'}",
+	    "type": "SyntaxCheckException"
+	  },
+	  "status": 400
+	}
 
 plugins.sql.slowlog
 ============================

legacy/src/main/java/org/opensearch/sql/legacy/utils/QueryDataAnonymizer.java

@@ -26,7 +26,8 @@ public class QueryDataAnonymizer {
      * Sensitive data includes index names, column names etc.,
      * which in druid parser are parsed to SQLIdentifierExpr instances
      * @param query entire sql query string
-     * @return sql query string with all identifiers replaced with "***"
+     * @return sql query string with all identifiers replaced with "***" on success
+     * and failure string otherwise to ensure no non-anonymized data is logged in production.
      */
     public static String anonymizeData(String query) {
         String resultQuery;
@@ -38,7 +39,8 @@ public static String anonymizeData(String query) {
                     .replaceAll("false", "boolean_literal")
                     .replaceAll("[\\n][\\t]+", " ");
         } catch (Exception e) {
-            LOG.warn("Caught an exception when anonymizing sensitive data");
+            LOG.warn("Caught an exception when anonymizing sensitive data.");
+            LOG.debug("String {} failed anonymization.", query);
             resultQuery = "Failed to anonymize data.";
         }
         return resultQuery;