tgravescs commented on a change in pull request #25299: [SPARK-27651][Core]
Avoid the network when shuffle blocks are fetched from the same host
URL: https://github.com/apache/spark/pull/25299#discussion_r350372735
##########
File path:
core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala
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@@ -441,6 +540,10 @@ final class ShuffleBlockFetcherIterator(
// Get Local Blocks
fetchLocalBlocks()
logDebug(s"Got local blocks in ${Utils.getUsedTimeNs(startTimeNs)}")
+
+ if (hostLocalBlocks.nonEmpty) {
+ blockManager.hostLocalDirManager.foreach(fetchHostLocalBlocks)
Review comment:
might be nice to add a logDebug similar to above about how long it took
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