KarmaGYZ commented on a change in pull request #10571: [FLINK-15241] Revert the 
unexpected change of the configuration for M…
URL: https://github.com/apache/flink/pull/10571#discussion_r357703361
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/clusterframework/TaskExecutorResourceUtils.java
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 @@ -570,7 +570,7 @@ private static CPUResource getCpuCores(final Configuration 
config, double fallba
                        if (cpuCores < 0) {
                                throw new 
IllegalConfigurationException("Configured cpu cores must be non-negative.");
                        }
-               } else if (fallback >= 0.0) {
 
 Review comment:
   Thanks for the review @tillrohrmann . True, changing the default of 
MESOS_RM_TASKS_CPUS to a negative value is another way. However, I don't get 
the meaning of requiring 0 cores. It seems to be an invalid value. Could 
@xintongsong kindly help to clarify this?

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