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Subject [GitHub] [spark] cloud-fan commented on a change in pull request #26040: [SPARK-9853][Core] Optimize shuffle fetch of continuous partition IDs
Date Wed, 16 Oct 2019 14:07:41 GMT
cloud-fan commented on a change in pull request #26040: [SPARK-9853][Core] Optimize shuffle
fetch of continuous partition IDs
URL: https://github.com/apache/spark/pull/26040#discussion_r335497525
 
 

 ##########
 File path: core/src/main/scala/org/apache/spark/shuffle/BlockStoreShuffleReader.scala
 ##########
 @@ -35,11 +35,35 @@ private[spark] class BlockStoreShuffleReader[K, C](
     readMetrics: ShuffleReadMetricsReporter,
     serializerManager: SerializerManager = SparkEnv.get.serializerManager,
     blockManager: BlockManager = SparkEnv.get.blockManager,
-    mapOutputTracker: MapOutputTracker = SparkEnv.get.mapOutputTracker)
+    mapOutputTracker: MapOutputTracker = SparkEnv.get.mapOutputTracker,
+    fetchMultiPartitions: Boolean)
 
 Review comment:
   We can even remove this parameter. The caller side can drop the special local property
if it doesn't need to fetch multiple partitions.

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