Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/3207#discussion_r20145483
--- Diff:
core/src/main/scala/org/apache/spark/network/nio/ConnectionManager.scala ---
@@ -77,7 +77,8 @@ private[nio] class ConnectionManager(
}
private val selector = SelectorProvider.provider.openSelector()
- private val ackTimeoutMonitor = new Timer("AckTimeoutMonitor", true)
+ private val ackTimeoutMonitor = Executors.newScheduledThreadPool(2,
--- End diff --
> corePoolSize the number of threads to keep in the pool, even if they are
idle
Here I think 1 is enough.
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