Naively increase the meta field char limit 50->500

Author: seanstory

docs/reference/elasticsearch/mapping-reference/mapping-field-meta.md

@@ -24,7 +24,7 @@ PUT my-index-000001
 ```
 
 ::::{note}
-Field metadata enforces at most 5 entries, that keys have a length that is less than or equal to 20, and that values are strings whose length is less than or equal to 50.
+Field metadata enforces at most 5 entries, that keys have a length that is less than or equal to 20, and that values are strings whose length is less than or equal to 500.
 ::::
 
 

server/src/main/java/org/elasticsearch/index/mapper/TypeParsers.java

@@ -54,9 +54,9 @@ public static Map<String, String> parseMeta(String name, Object metaObject) {
         }
         for (Object value : meta.values()) {
             if (value instanceof String sValue) {
-                if (sValue.codePointCount(0, sValue.length()) > 50) {
+                if (sValue.codePointCount(0, sValue.length()) > 500) {
                     throw new MapperParsingException(
-                        "[meta] values can't be longer than 50 chars, but got [" + value + "] for field [" + name + "]"
+                        "[meta] values can't be longer than 500 chars, but got [" + value + "] for field [" + name + "]"
                     );
                 }
             } else if (value == null) {