Merge pull request #16305 from s1monw/issues/16301

Add a hard check to ensure we are running with the expected lucene version

core/src/main/java/org/elasticsearch/bootstrap/Bootstrap.java

@@ -288,6 +288,9 @@ final class Bootstrap {
             // fail if using broken version
             JVMCheck.check();
 
+            // fail if somebody replaced the lucene jars
+            checkLucene();
+
             INSTANCE.setup(true, settings, environment);
 
             INSTANCE.start();
@@ -364,4 +367,11 @@ final class Bootstrap {
     private static void exit(int status) {
         System.exit(status);
     }
+
+    private static void checkLucene() {
+        if (Version.CURRENT.luceneVersion.equals(org.apache.lucene.util.Version.LATEST) == false) {
+            throw new AssertionError("Lucene version mismatch this version of Elasticsearch requires lucene version ["
+                + Version.CURRENT.luceneVersion + "]  but the current lucene version is [" + org.apache.lucene.util.Version.LATEST + "]");
+        }
+    }
 }