xintongsong commented on a change in pull request #9801: [FLINK-13983][runtime] 
Launch task executor with new memory calculation logics
URL: https://github.com/apache/flink/pull/9801#discussion_r329349401
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/clusterframework/TaskExecutorResourceUtils.java
 ##########
 @@ -125,7 +125,7 @@ public static String generateDynamicConfigsStr(final 
TaskExecutorResourceSpec ta
        private static String assembleDynamicConfigsStr(final Map<String, 
String> configs) {
                final StringBuffer sb = new StringBuffer();
                for (Map.Entry<String, String> entry : configs.entrySet()) {
-                       
sb.append("-D").append(entry.getKey()).append("=").append(entry.getValue()).append("
 ");
+                       sb.append("-D 
").append(entry.getKey()).append("=").append(entry.getValue()).append(" ");
 
 Review comment:
   Dynamic configs are exiting mechanism for passing configs into flink 
overwriting configs in flink-conf.yaml. The correct format requires a space 
between '-D' and the following key-value part. This change is just a fix of 
previous wrong format.

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