YARN-8812. Containers fail during creating a symlink which started with hyphen for a resource file. Contributed by Oleksandr Shevchenko

(cherry picked from commit 3ce99e32f7d7887412cae8337cd4ebeb3b2ee308)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java

@@ -1404,7 +1404,7 @@ public class ContainerLaunch implements Callable<Integer> {
 
     @Override
     protected void link(Path src, Path dst) throws IOException {
-      line("ln -sf \"", src.toUri().getPath(), "\" \"", dst.toString(), "\"");
+      line("ln -sf -- \"", src.toUri().getPath(), "\" \"", dst.toString(), "\"");
     }
 
     @Override

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/TestContainerLaunch.java

@@ -159,7 +159,7 @@ public class TestContainerLaunch extends BaseContainerManagerTest {
     File shellFile = null;
     File tempFile = null;
     String badSymlink = Shell.WINDOWS ? "foo@zz_#!-+bar.cmd" :
-      "foo@zz%_#*&!-+= bar()";
+      "-foo@zz%_#*&!-+= bar()";
     File symLinkFile = null;
 
     try {