NicoK commented on a change in pull request #8556: [FLINK-12171][Network] Do
not limit the network buffer memory by heap size on the TM side
URL: https://github.com/apache/flink/pull/8556#discussion_r308279997
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/NettyShuffleEnvironmentConfiguration.java
##########
@@ -224,32 +224,40 @@ public static NettyShuffleEnvironmentConfiguration
fromConfiguration(
public static long calculateNewNetworkBufferMemory(Configuration
config, long maxJvmHeapMemory) {
// The maximum heap memory has been adjusted as in
TaskManagerServices#calculateHeapSizeMB
// and we need to invert these calculations.
- final long jvmHeapNoNet;
+ final long heapAndManagedMemory;
final MemoryType memoryType =
ConfigurationParserUtils.getMemoryType(config);
if (memoryType == MemoryType.HEAP) {
- jvmHeapNoNet = maxJvmHeapMemory;
+ heapAndManagedMemory = maxJvmHeapMemory;
} else if (memoryType == MemoryType.OFF_HEAP) {
long configuredMemory =
ConfigurationParserUtils.getManagedMemorySize(config) << 20; // megabytes to
bytes
if (configuredMemory > 0) {
// The maximum heap memory has been adjusted
according to configuredMemory, i.e.
// maxJvmHeap = jvmHeapNoNet - configuredMemory
- jvmHeapNoNet = maxJvmHeapMemory +
configuredMemory;
+ heapAndManagedMemory = maxJvmHeapMemory +
configuredMemory;
} else {
// The maximum heap memory has been adjusted
according to the fraction, i.e.
// maxJvmHeap = jvmHeapNoNet - jvmHeapNoNet *
managedFraction = jvmHeapNoNet * (1 - managedFraction)
- jvmHeapNoNet = (long) (maxJvmHeapMemory / (1.0
- ConfigurationParserUtils.getManagedMemoryFraction(config)));
+ heapAndManagedMemory = (long) (maxJvmHeapMemory
/ (1.0 - ConfigurationParserUtils.getManagedMemoryFraction(config)));
}
} else {
throw new RuntimeException("No supported memory type
detected.");
}
// finally extract the network buffer memory size again from:
- // jvmHeapNoNet = jvmHeap - networkBufBytes
- // = jvmHeap - Math.min(networkBufMax,
Math.max(networkBufMin, jvmHeap * netFraction)
- // jvmHeap = jvmHeapNoNet / (1.0 - networkBufFraction)
+ // heapAndManagedMemory = totalProcessMemory -
networkReservedMemory
+ // = totalProcessMemory - Math.min(networkBufMax,
Math.max(networkBufMin, totalProcessMemory * networkBufFraction)
Review comment:
nit: please fix indentation in the second line here
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