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From GitBox <...@apache.org>
Subject [GitHub] wg1026688210 commented on a change in pull request #7185: [FLINK-10884] [yarn/mesos] adjust container memory param to set a safe margin from offheap memory
Date Thu, 06 Dec 2018 02:35:43 GMT
wg1026688210 commented on a change in pull request #7185: [FLINK-10884] [yarn/mesos]  adjust
 container memory param  to set a safe margin from offheap memory
URL: https://github.com/apache/flink/pull/7185#discussion_r239310963
 
 

 ##########
 File path: flink-runtime/src/main/java/org/apache/flink/runtime/clusterframework/ContaineredTaskManagerParameters.java
 ##########
 @@ -158,8 +158,10 @@ public static ContaineredTaskManagerParameters create(
 
 		// (2) split the remaining Java memory between heap and off-heap
 		final long heapSizeMB = TaskManagerServices.calculateHeapSizeMB(containerMemoryMB - cutoffMB,
config);
-		// use the cut-off memory for off-heap (that was its intention)
-		final long offHeapSizeMB = containerMemoryMB - heapSizeMB;
+		// (3) try to compute the offHeapMemory from a safe margin
+		final long restMemoryMB = containerMemoryMB - heapSizeMB;
+		final long offHeapCutoffMemory = calculateOffHeapCutoffMB(config, restMemoryMB);
 
 Review comment:
   maybe we need some suggestions from @GJL 

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