Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21110#discussion_r182932853
--- Diff:
common/network-common/src/main/java/org/apache/spark/network/server/TransportServer.java
---
@@ -98,7 +99,8 @@ private void init(String hostToBind, int portToBind) {
.group(bossGroup, workerGroup)
.channel(NettyUtils.getServerChannelClass(ioMode))
.option(ChannelOption.ALLOCATOR, allocator)
- .childOption(ChannelOption.ALLOCATOR, allocator);
+ .childOption(ChannelOption.ALLOCATOR, allocator)
+ .childOption(ChannelOption.SO_REUSEADDR, !SystemUtils.IS_OS_WINDOWS);
--- End diff --
Where would you put it? Every place where this is set? Not a fan of that.
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