Nit

Author: albertzaharovits

server/src/main/java/org/elasticsearch/index/engine/ThreadPoolMergeExecutorService.java

@@ -388,7 +388,7 @@ private void abortMergeTask(MergeTask mergeTask) {
      * (i.e. multiple data path is not really supported when blocking merges due to insufficient available disk space
      * (but nothing blows up either, if using multiple data paths))
      */
-    protected static AvailableDiskSpacePeriodicMonitor startDiskSpaceMonitoring(
+    static AvailableDiskSpacePeriodicMonitor startDiskSpaceMonitoring(
         ThreadPool threadPool,
         NodeEnvironment.DataPath[] dataPaths,
         ClusterSettings clusterSettings,