diff --git a/CHANGELOG.md b/CHANGELOG.md
index c62122ddd9ce9..b2d1659b124c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Make outbound side of transport protocol dependent ([#13293](https://github.com/opensearch-project/OpenSearch/pull/13293))
 - [Remote Store] Add dynamic cluster settings to set timeout for segments upload to Remote Store ([#13679](https://github.com/opensearch-project/OpenSearch/pull/13679))
 - [Remote Store] Upload translog checkpoint as object metadata to translog.tlog([#13637](https://github.com/opensearch-project/OpenSearch/pull/13637))
+- Add getMetadataFields to MapperService ([#13819](https://github.com/opensearch-project/OpenSearch/pull/13819))
 - Support Dynamic Pruning in Cardinality Aggregation ([#13821](https://github.com/opensearch-project/OpenSearch/pull/13821))
 
 ### Dependencies
@@ -24,6 +25,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `com.google.code.gson:gson` from 2.10.1 to 2.11.0 ([#13752](https://github.com/opensearch-project/OpenSearch/pull/13752))
 - Bump `ch.qos.logback:logback-core` from 1.5.3 to 1.5.6 ([#13756](https://github.com/opensearch-project/OpenSearch/pull/13756))
 - Bump `netty` from 4.1.109.Final to 4.1.110.Final ([#13802](https://github.com/opensearch-project/OpenSearch/pull/13802))
+- Bump `jackson` from 2.17.0 to 2.17.1 ([#13817](https://github.com/opensearch-project/OpenSearch/pull/13817))
 
 ### Changed
 - Add ability for Boolean and date field queries to run when only doc_values are enabled ([#11650](https://github.com/opensearch-project/OpenSearch/pull/11650))
diff --git a/buildSrc/version.properties b/buildSrc/version.properties
index d8779cf8c2778..317e1a0129f1d 100644
--- a/buildSrc/version.properties
+++ b/buildSrc/version.properties
@@ -7,8 +7,8 @@ bundled_jdk = 21.0.3+9
 # optional dependencies
 spatial4j         = 0.7
 jts               = 1.15.0
-jackson           = 2.17.0
-jackson_databind  = 2.17.0
+jackson           = 2.17.1
+jackson_databind  = 2.17.1
 snakeyaml         = 2.1
 icu4j             = 70.1
 supercsv          = 2.4.0
diff --git a/client/sniffer/licenses/jackson-core-2.17.0.jar.sha1 b/client/sniffer/licenses/jackson-core-2.17.0.jar.sha1
deleted file mode 100644
index 9b906dbda1656..0000000000000
--- a/client/sniffer/licenses/jackson-core-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-a6e5058ef9720623c517252d17162f845306ff3a
\ No newline at end of file
diff --git a/client/sniffer/licenses/jackson-core-2.17.1.jar.sha1 b/client/sniffer/licenses/jackson-core-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..82dab5981e652
--- /dev/null
+++ b/client/sniffer/licenses/jackson-core-2.17.1.jar.sha1
@@ -0,0 +1 @@
+5e52a11644cd59a28ef79f02bddc2cc3bab45edb
\ No newline at end of file
diff --git a/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.0.jar.sha1 b/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.1.jar.sha1 b/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/distribution/tools/upgrade-cli/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.0.jar.sha1 b/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.1.jar.sha1 b/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/distribution/tools/upgrade-cli/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/libs/core/licenses/jackson-core-2.17.0.jar.sha1 b/libs/core/licenses/jackson-core-2.17.0.jar.sha1
deleted file mode 100644
index 9b906dbda1656..0000000000000
--- a/libs/core/licenses/jackson-core-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-a6e5058ef9720623c517252d17162f845306ff3a
\ No newline at end of file
diff --git a/libs/core/licenses/jackson-core-2.17.1.jar.sha1 b/libs/core/licenses/jackson-core-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..82dab5981e652
--- /dev/null
+++ b/libs/core/licenses/jackson-core-2.17.1.jar.sha1
@@ -0,0 +1 @@
+5e52a11644cd59a28ef79f02bddc2cc3bab45edb
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-core-2.17.0.jar.sha1 b/libs/x-content/licenses/jackson-core-2.17.0.jar.sha1
deleted file mode 100644
index 9b906dbda1656..0000000000000
--- a/libs/x-content/licenses/jackson-core-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-a6e5058ef9720623c517252d17162f845306ff3a
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-core-2.17.1.jar.sha1 b/libs/x-content/licenses/jackson-core-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..82dab5981e652
--- /dev/null
+++ b/libs/x-content/licenses/jackson-core-2.17.1.jar.sha1
@@ -0,0 +1 @@
+5e52a11644cd59a28ef79f02bddc2cc3bab45edb
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-cbor-2.17.0.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-cbor-2.17.0.jar.sha1
deleted file mode 100644
index 382e20d3d31c1..0000000000000
--- a/libs/x-content/licenses/jackson-dataformat-cbor-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-6833c8573452d583e4af650a7424d547606b2501
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-cbor-2.17.1.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-cbor-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..ff42ed1f92cfe
--- /dev/null
+++ b/libs/x-content/licenses/jackson-dataformat-cbor-2.17.1.jar.sha1
@@ -0,0 +1 @@
+ba5d8e6ecc62aa0e49c0ce935b8696352dbebc71
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-smile-2.17.0.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-smile-2.17.0.jar.sha1
deleted file mode 100644
index d117479166d17..0000000000000
--- a/libs/x-content/licenses/jackson-dataformat-smile-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-f10183857607fde789490d33ea46372a2d2b0c72
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-smile-2.17.1.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-smile-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..47d19067cf2a6
--- /dev/null
+++ b/libs/x-content/licenses/jackson-dataformat-smile-2.17.1.jar.sha1
@@ -0,0 +1 @@
+89683ac4f0a0c2c4f69ea56b90480ed40266dac8
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-yaml-2.17.0.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-yaml-2.17.0.jar.sha1
deleted file mode 100644
index 35242eed9b212..0000000000000
--- a/libs/x-content/licenses/jackson-dataformat-yaml-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-57a963c6258c49febc11390082d8503f71bb15a9
\ No newline at end of file
diff --git a/libs/x-content/licenses/jackson-dataformat-yaml-2.17.1.jar.sha1 b/libs/x-content/licenses/jackson-dataformat-yaml-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7946e994c7104
--- /dev/null
+++ b/libs/x-content/licenses/jackson-dataformat-yaml-2.17.1.jar.sha1
@@ -0,0 +1 @@
+b4c7b8a9ea3f398116a75c146b982b22afebc4ee
\ No newline at end of file
diff --git a/modules/ingest-geoip/licenses/jackson-annotations-2.17.0.jar.sha1 b/modules/ingest-geoip/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/modules/ingest-geoip/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/modules/ingest-geoip/licenses/jackson-annotations-2.17.1.jar.sha1 b/modules/ingest-geoip/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/modules/ingest-geoip/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/modules/ingest-geoip/licenses/jackson-databind-2.17.0.jar.sha1 b/modules/ingest-geoip/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/modules/ingest-geoip/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/modules/ingest-geoip/licenses/jackson-databind-2.17.1.jar.sha1 b/modules/ingest-geoip/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/modules/ingest-geoip/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/plugins/crypto-kms/licenses/jackson-annotations-2.17.0.jar.sha1 b/plugins/crypto-kms/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/plugins/crypto-kms/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/plugins/crypto-kms/licenses/jackson-annotations-2.17.1.jar.sha1 b/plugins/crypto-kms/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/plugins/crypto-kms/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/plugins/crypto-kms/licenses/jackson-databind-2.17.0.jar.sha1 b/plugins/crypto-kms/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/plugins/crypto-kms/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/plugins/crypto-kms/licenses/jackson-databind-2.17.1.jar.sha1 b/plugins/crypto-kms/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/plugins/crypto-kms/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/plugins/discovery-ec2/licenses/jackson-annotations-2.17.0.jar.sha1 b/plugins/discovery-ec2/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/plugins/discovery-ec2/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/plugins/discovery-ec2/licenses/jackson-annotations-2.17.1.jar.sha1 b/plugins/discovery-ec2/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/plugins/discovery-ec2/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/plugins/discovery-ec2/licenses/jackson-databind-2.17.0.jar.sha1 b/plugins/discovery-ec2/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/plugins/discovery-ec2/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/plugins/discovery-ec2/licenses/jackson-databind-2.17.1.jar.sha1 b/plugins/discovery-ec2/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/plugins/discovery-ec2/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-annotations-2.17.0.jar.sha1 b/plugins/repository-azure/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/plugins/repository-azure/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-annotations-2.17.1.jar.sha1 b/plugins/repository-azure/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/plugins/repository-azure/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-databind-2.17.0.jar.sha1 b/plugins/repository-azure/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/plugins/repository-azure/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-databind-2.17.1.jar.sha1 b/plugins/repository-azure/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/plugins/repository-azure/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.0.jar.sha1 b/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.0.jar.sha1
deleted file mode 100644
index 9dea3dfc55691..0000000000000
--- a/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-fbe3c274a39cef5538ca8688ac7e2ad0053a6ffa
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.1.jar.sha1 b/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..3915ab2616beb
--- /dev/null
+++ b/plugins/repository-azure/licenses/jackson-dataformat-xml-2.17.1.jar.sha1
@@ -0,0 +1 @@
+e6a168dba62aa63743b9e2b83f4e0f0dfdc143d3
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.0.jar.sha1 b/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.0.jar.sha1
deleted file mode 100644
index fe8e51b8e0869..0000000000000
--- a/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-3fab507bba9d477e52ed2302dc3ddbd23cbae339
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.1.jar.sha1 b/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..db26ebbf738f7
--- /dev/null
+++ b/plugins/repository-azure/licenses/jackson-datatype-jsr310-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0969b0c3cb8c75d759e9a6c585c44c9b9f3a4f75
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.0.jar.sha1 b/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 3954ac9c39af3..0000000000000
--- a/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-e07032ce170277213ac4835169ca79fa0340c7b5
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.1.jar.sha1 b/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..bb8ecfe34d295
--- /dev/null
+++ b/plugins/repository-azure/licenses/jackson-module-jaxb-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+f77e7bf0e64dfcf53bfdcf2764ad7ab92b78a4da
\ No newline at end of file
diff --git a/plugins/repository-s3/licenses/jackson-annotations-2.17.0.jar.sha1 b/plugins/repository-s3/licenses/jackson-annotations-2.17.0.jar.sha1
deleted file mode 100644
index 66bf7ed6ecce8..0000000000000
--- a/plugins/repository-s3/licenses/jackson-annotations-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-880a742337010da4c851f843d8cac150e22dff9f
\ No newline at end of file
diff --git a/plugins/repository-s3/licenses/jackson-annotations-2.17.1.jar.sha1 b/plugins/repository-s3/licenses/jackson-annotations-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..4ceead1b7ae4f
--- /dev/null
+++ b/plugins/repository-s3/licenses/jackson-annotations-2.17.1.jar.sha1
@@ -0,0 +1 @@
+fca7ef6192c9ad05d07bc50da991bf937a84af3a
\ No newline at end of file
diff --git a/plugins/repository-s3/licenses/jackson-databind-2.17.0.jar.sha1 b/plugins/repository-s3/licenses/jackson-databind-2.17.0.jar.sha1
deleted file mode 100644
index c0e4bb0c56849..0000000000000
--- a/plugins/repository-s3/licenses/jackson-databind-2.17.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7173e9e1d4bc6d7ca03bc4eeedcd548b8b580b34
\ No newline at end of file
diff --git a/plugins/repository-s3/licenses/jackson-databind-2.17.1.jar.sha1 b/plugins/repository-s3/licenses/jackson-databind-2.17.1.jar.sha1
new file mode 100644
index 0000000000000..7cf1ac1b60301
--- /dev/null
+++ b/plugins/repository-s3/licenses/jackson-databind-2.17.1.jar.sha1
@@ -0,0 +1 @@
+0524dcbcccdde7d45a679dfc333e4763feb09079
\ No newline at end of file
diff --git a/server/src/main/java/org/opensearch/index/mapper/MapperService.java b/server/src/main/java/org/opensearch/index/mapper/MapperService.java
index fc8654216e187..a1f3894c9f14c 100644
--- a/server/src/main/java/org/opensearch/index/mapper/MapperService.java
+++ b/server/src/main/java/org/opensearch/index/mapper/MapperService.java
@@ -714,6 +714,13 @@ public boolean isMetadataField(String field) {
         return mapperRegistry.isMetadataField(field);
     }
 
+    /**
+     * Returns a set containing the registered metadata fields
+     */
+    public Set<String> getMetadataFields() {
+        return Collections.unmodifiableSet(mapperRegistry.getMetadataMapperParsers().keySet());
+    }
+
     /**
      * An analyzer wrapper that can lookup fields within the index mappings
      */
diff --git a/server/src/test/java/org/opensearch/index/mapper/MapperServiceTests.java b/server/src/test/java/org/opensearch/index/mapper/MapperServiceTests.java
index adcfc9d7b17fc..b9c8866e69cbb 100644
--- a/server/src/test/java/org/opensearch/index/mapper/MapperServiceTests.java
+++ b/server/src/test/java/org/opensearch/index/mapper/MapperServiceTests.java
@@ -52,6 +52,7 @@
 import org.opensearch.index.mapper.KeywordFieldMapper.KeywordFieldType;
 import org.opensearch.index.mapper.MapperService.MergeReason;
 import org.opensearch.index.mapper.NumberFieldMapper.NumberFieldType;
+import org.opensearch.indices.IndicesModule;
 import org.opensearch.indices.InvalidTypeNameException;
 import org.opensearch.indices.analysis.AnalysisModule.AnalysisProvider;
 import org.opensearch.plugins.AnalysisPlugin;
@@ -90,6 +91,11 @@ public void testTypeValidation() {
         MapperService.validateTypeName("_doc"); // no exception
     }
 
+    public void testGetMetadataFieldsReturnsExpectedSet() throws Throwable {
+        final MapperService mapperService = createIndex("test1").mapperService();
+        assertEquals(mapperService.getMetadataFields(), IndicesModule.getBuiltInMetadataFields());
+    }
+
     public void testPreflightUpdateDoesNotChangeMapping() throws Throwable {
         final MapperService mapperService = createIndex("test1").mapperService();
         final CompressedXContent mapping = createMappingSpecifyingNumberOfFields(1);