Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/1129#discussion_r39494490
--- Diff:
flink-runtime/src/main/scala/org/apache/flink/runtime/taskmanager/TaskManager.scala
---
@@ -1586,32 +1586,29 @@ object TaskManager {
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
"MemoryManager fraction of the free memory must
be between 0.0 and 1.0")
- val relativeMemSize =
(EnvironmentInformation.getSizeOfFreeHeapMemoryWithDefrag() *
- fraction).toLong
+ if (memType == MemoryType.HEAP) {
- LOG.info(s"Using $fraction of the currently free heap space for
Flink managed " +
- s" heap memory (${relativeMemSize >> 20} MB).")
+ val relativeMemSize =
(EnvironmentInformation.getSizeOfFreeHeapMemoryWithDefrag() *
+ fraction).toLong
- relativeMemSize
- }
- else {
- val ratio = configuration.getFloat(
- ConfigConstants.TASK_MANAGER_MEMORY_OFF_HEAP_RATIO_KEY,
- ConfigConstants.DEFAULT_MEMORY_MANAGER_MEMORY_OFF_HEAP_RATIO)
-
- checkConfigParameter(ratio > 0.0f,
- ConfigConstants.TASK_MANAGER_MEMORY_OFF_HEAP_RATIO_KEY,
- "MemoryManager ratio (off-heap memory / heap size) must be larger
than zero")
-
- val maxHeapSize = EnvironmentInformation.getMaxJvmHeapMemory()
- val relativeMemSize = (maxHeapSize * ratio).toLong
+ LOG.info(s"Using $fraction of the currently free heap space for
Flink managed " +
+ s" heap memory (${relativeMemSize >> 20} MB).")
+
+ relativeMemSize
+ } else if (memType == MemoryType.OFF_HEAP) {
- LOG.info(s"Using $ratio time the heap size (${maxHeapSize} bytes)
for Flink " +
- s"managed off-heap memory (${relativeMemSize >> 20} MB).")
+ // The maximum heap memory has been adjusted according to the
fraction
+ val directMemorySize =
(EnvironmentInformation.getMaxJvmHeapMemory() / fraction).toLong
--- End diff --
Never mind, it's (HEAPSIZE / (1.0 - fraction)) * fraction..
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