Make versionPointCache thread-safe

1 files changed, 2 insertions, 1 deletions

diff --git a/vespaclient-container-plugin/src/main/java/com/yahoo/documentapi/metrics/DocumentApiMetrics.java b/vespaclient-container-plugin/src/main/java/com/yahoo/documentapi/metrics/DocumentApiMetrics.java
index 2ecaea19a90..1d6d03655bf 100644
--- a/vespaclient-container-plugin/src/main/java/com/yahoo/documentapi/metrics/DocumentApiMetrics.java
+++ b/vespaclient-container-plugin/src/main/java/com/yahoo/documentapi/metrics/DocumentApiMetrics.java
@@ -10,6 +10,7 @@ import java.time.Duration;
 import java.time.Instant;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 
 /**
@@ -23,7 +24,7 @@ public class DocumentApiMetrics {
     private final Gauge feedLatency;
     private final Counter feedRequests;
     private final Map<DocumentOperationStatus, Map<DocumentOperationType, Point>> points = new HashMap<>();
-    private final Map<String, Point> versionPointCache = new HashMap<>();
+    private final Map<String, Point> versionPointCache = new ConcurrentHashMap<>();
 
     public DocumentApiMetrics(MetricReceiver metricReceiver, String apiName) {
         Map<String, String> dimensions = new HashMap<>();