Github user yanghua commented on a diff in the pull request: https://github.com/apache/flink/pull/6297#discussion_r202075216 --- Diff: flink-yarn/src/main/java/org/apache/flink/yarn/cli/FlinkYarnSessionCli.java --- @@ -386,10 +386,10 @@ private ClusterSpecification createClusterSpecification(Configuration configurat } // JobManager Memory - final int jobManagerMemoryMB = MemorySize.parse(configuration.getString(JobManagerOptions.JOB_MANAGER_HEAP_MEMORY)).getMebiBytes(); + final int jobManagerMemoryMB = MemorySize.parse(configuration.getString(JobManagerOptions.JOB_MANAGER_HEAP_MEMORY), MemorySize.MemoryUnit.MEGA_BYTES).getMebiBytes(); --- End diff -- introduce a new config key is used to make the `jobmanager.heap.mb` backwards compatibility in flink config file (config.sh can calculate it accurately). And user can specify the unit for the value of the key `jobmanager.heap.size` . So if we remove anything about `JOB_MANAGER_HEAP_MEMORY_MB ` in Java and Scala code, is there any problem?
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