Compile fix

markharwood · markharwood · commit a83ff2825ec1 · 2021-04-07T14:48:59.000+01:00
diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/XPackPlugin.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/XPackPlugin.java
@@ -246,12 +246,11 @@ private static boolean alreadyContainsXPackCustomMetadata(ClusterState clusterSt
             metadata.custom(WatcherMetadata.TYPE) != null ||
             clusterState.custom(TokenMetadata.TYPE) != null;
     }
-    
+
     @Override
     public Map<String, MetadataFieldMapper.TypeParser> getMetadataMappers() {
-        return Map.of(DataTierFieldMapper.NAME, DataTierFieldMapper.PARSER);
+        return Collections.singletonMap(DataTierFieldMapper.NAME, DataTierFieldMapper.PARSER);
     }
-    
 
     @Override
     public Settings additionalSettings() {

Original file line number	Diff line number	Diff line change
`@@ -246,12 +246,11 @@ private static boolean alreadyContainsXPackCustomMetadata(ClusterState clusterSt`
`246`	`246`	`metadata.custom(WatcherMetadata.TYPE) != null \|\|`
`247`	`247`	`clusterState.custom(TokenMetadata.TYPE) != null;`
`248`	`248`	`}`
`249`		`-`
	`249`	`+`
`250`	`250`	`@Override`
`251`	`251`	`public Map<String, MetadataFieldMapper.TypeParser> getMetadataMappers() {`
`252`		`- return Map.of(DataTierFieldMapper.NAME, DataTierFieldMapper.PARSER);`
	`252`	`+ return Collections.singletonMap(DataTierFieldMapper.NAME, DataTierFieldMapper.PARSER);`
`253`	`253`	`}`
`254`		`-`
`255`	`254`
`256`	`255`	`@Override`
`257`	`256`	`public Settings additionalSettings() {`