vanzin 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_r348096296
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File path: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
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@@ -33,6 +33,9 @@ import scala.util.Random
import scala.util.control.NonFatal
import com.codahale.metrics.{MetricRegistry, MetricSet}
+import com.google.common.cache.CacheBuilder
+import com.google.common.util.concurrent.FutureCallback
+import java.util
Review comment:
Doesn't look like you're using this (I only see `java.util.Map`, for
example).
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