Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/3053#discussion_r19708329
--- Diff:
core/src/main/scala/org/apache/spark/network/netty/NettyBlockTransferService.scala
---
@@ -106,5 +106,8 @@ class NettyBlockTransferService(conf: SparkConf)
extends BlockTransferService {
result.future
}
- override def close(): Unit = server.close()
+ override def close(): Unit = {
+ server.close()
+ clientFactory.close()
--- End diff --
This is the most significant leak, we'd leak one event loop per SparkContext
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