Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17325#discussion_r108201923
--- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
---
@@ -1179,9 +1179,13 @@ private[spark] class BlockManager(
useOffHeap = info.level.useOffHeap,
deserialized = info.level.deserialized,
replication = maxReplicas)
+ // we know we are called as a result of an executor removal, so we
refresh peer cache
+ // this way, we won't try to replicate to a missing executor with a
stale reference
+ val peers = getPeers(true)
--- End diff --
I think we can just call `getPeers(forceFetch = true)`
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