Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/18922#discussion_r133387011
--- Diff:
common/network-common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java
---
@@ -210,6 +210,18 @@ private TransportClient createClient(InetSocketAddress
address)
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS,
conf.connectionTimeoutMs())
.option(ChannelOption.ALLOCATOR, pooledAllocator);
+ if (conf.backLog() > 0) {
+ bootstrap.option(ChannelOption.SO_BACKLOG, conf.backLog());
--- End diff --
It is really used for Client bootstrap? AFAIK backlog is mainly used in
server side to cache the incoming connections.
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