Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/859#discussion_r33020328
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/util/EnvironmentInformation.java
---
@@ -137,7 +137,13 @@ public static long getSizeOfFreeHeapMemoryWithDefrag()
{
*/
public static long getSizeOfFreeHeapMemory() {
Runtime r = Runtime.getRuntime();
- return r.maxMemory() - r.totalMemory() + r.freeMemory();
+ long maxMemory = r.maxMemory();
+ if (maxMemory == Long.MAX_VALUE) {
+ // workaround for some JVM versions
+ return r.freeMemory();
--- End diff --
We could fall back to a conservative value and print a warning that the
memory has to be set manually. To set the memory manually, the user has to go
through the LocalExecutor which is not a nice out of the box experience.
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