jiangxb1987 commented on a change in pull request #28117: [SPARK-31344][CORE]
Polish implementation of barrier() and allGather()
URL: https://github.com/apache/spark/pull/28117#discussion_r404553566
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File path: core/src/main/scala/org/apache/spark/BarrierCoordinator.scala
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@@ -107,11 +102,11 @@ private[spark] class BarrierCoordinator(
// An Array of RPCCallContexts for barrier tasks that have made a blocking
runBarrier() call
private val requesters: ArrayBuffer[RpcCallContext] = new
ArrayBuffer[RpcCallContext](numTasks)
- // An Array of allGather messages for barrier tasks that have made a
blocking runBarrier() call
- private val allGatherMessages: ArrayBuffer[String] = new
Array[String](numTasks).to[ArrayBuffer]
+ // Messages from each barrier task that have made a blocking runBarrier()
call. And it will be
Review comment:
nit: `And it` -> `The messages`
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