Merge pull request #1034 from peternied/optmize-invalid-response-regex

Optimize the regex parser for InvalidResponse

RFS/src/main/java/org/opensearch/migrations/bulkload/common/InvalidResponse.java

@@ -17,7 +17,7 @@
 
 @Slf4j
 public class InvalidResponse extends RfsException {
-    private static final Pattern UNKNOWN_SETTING = Pattern.compile("unknown setting \\[(.+?)\\].+");
+    private static final Pattern UNKNOWN_SETTING = Pattern.compile("unknown setting \\[([a-zA-Z0-9_.-]+)\\].+");
     private static final ObjectMapper objectMapper = new ObjectMapper();
     private final transient HttpResponse response;