Hello Everyone 在阅读ProcessMemoryUtils类的代码时，我怀疑sanityCheckTotalProcessMemory方法[1]中的主体逻辑永远都不会执行：
1. 在deriveJvmMetaspaceAndOverheadFromTotalFlinkMemory方法中，判断了是否显式配置了TotalProcessMemory[2] 2. false分支（也就是没有显式配置TotalProcessMemory）的逻辑中调用了sanityCheckTotalProcessMemory方法，而sanityCheckTotalProcessMemory方法的主体逻辑 只有在显式配置了TotalProcessMemory时[3]才会执行，所以sanityCheckTotalProcessMemory方法的主体逻辑应该永远不会执行 参照TaskExecutorFlinkMemoryUtils类中的sanityCheckTotalFlinkMemory方法（该方法与sanityCheckTotalProcessMemory方法逻辑类似，都是比较衍生的内存大小与显式配置的内存大小是否一致）的调用位置[4][5]， 我猜测sanityCheckTotalProcessMemory方法是不是应该放在deriveJvmMetaspaceAndOverheadFromTotalFlinkMemory方法中if分支的后面，而不是在分支里面 也有可能是对这段代码的理解不够，没有揣测到这么写的意图，希望大佬们帮忙确认下 [1] https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L239 <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L239> [2] https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L170 <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L170> [3] https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L247 <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/ProcessMemoryUtils.java#L247> [4] https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/taskmanager/TaskExecutorFlinkMemoryUtils.java#L101 <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/taskmanager/TaskExecutorFlinkMemoryUtils.java#L101> [5] https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/taskmanager/TaskExecutorFlinkMemoryUtils.java#L192 <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/taskmanager/TaskExecutorFlinkMemoryUtils.java#L192> Best regards YuFeng
