set meterMap as volatile

pavel-golub · Nov 26, 2017 · 9be8ccb · 9be8ccb
1 parent 6b3fbcd
commit 9be8ccb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/micrometer-core/src/main/java/io/micrometer/core/instrument/MeterRegistry.java b/micrometer-core/src/main/java/io/micrometer/core/instrument/MeterRegistry.java
@@ -56,7 +56,7 @@ protected MeterRegistry(Clock clock) {
         this.clock = clock;
     }
 
-    private Map<Id, Meter> meterMap = Collections.emptyMap();
+    private volatile Map<Id, Meter> meterMap = Collections.emptyMap();
     private final List<MeterFilter> filters = new ArrayList<>();
 
     /**