Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/4112#discussion_r126451783
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyBufferPool.java
---
@@ -61,7 +60,9 @@ public NettyBufferPool(int numberOfArenas) {
checkArgument(numberOfArenas >= 1, "Number of arenas");
this.numberOfArenas = numberOfArenas;
- if (!PlatformDependent.hasUnsafe()) {
+ try {
+ Class.forName("sun.misc.Unsafe");
+ } catch (ClassNotFoundException e) {
--- End diff --
After checking with @StefanRRichter, it seems this check is unnecessary
anyway since `org.apache.flink.core.memory.MemoryUtils#UNSAFE` is getting the
class if needed and if not existing, Flink should not start anyway.
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