Test case

Signed-off-by: Sriram Ganesh <[email protected]>

Author: rgsriram

server/src/main/java/org/opensearch/index/shard/IndexingStats.java

@@ -177,7 +177,7 @@ public Stats(StreamInput in) throws IOException {
             isThrottled = in.readBoolean();
             throttleTimeInMillis = in.readLong();
             if (in.getVersion().onOrAfter(Version.V_3_1_0)) {
-                maxLastIndexRequestTimestamp = in.readVLong();
+                maxLastIndexRequestTimestamp = in.readZLong();
             } else {
                 maxLastIndexRequestTimestamp = 0L;
             }