YARN-2891. Failed Container Executor does not provide a clear error message. Contributed by Dustin Cote. (harsh)

hadoop-yarn-project/CHANGES.txt

@@ -59,6 +59,9 @@ Release 2.7.0 - UNRELEASED
 
   IMPROVEMENTS
 
+    YARN-2891. Failed Container Executor does not provide a clear error
+    message. (Dustin Cote via harsh)
+
     YARN-1979. TestDirectoryCollection fails when the umask is unusual.
     (Vinod Kumar Vavilapalli and Tsuyoshi OZAWA via junping_du)
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c

@@ -526,7 +526,7 @@ int check_dir(char* npath, mode_t st_mode, mode_t desired, int finalComponent) {
     int filePermInt = st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
     int desiredInt = desired & (S_IRWXU | S_IRWXG | S_IRWXO);
     if (filePermInt != desiredInt) {
-      fprintf(LOGFILE, "Path %s does not have desired permission.\n", npath);
+      fprintf(LOGFILE, "Path %s has permission %o but needs permission %o.\n", npath, filePermInt, desiredInt);
       return -1;
     }
   }