Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/9610#discussion_r44742596
--- Diff:
core/src/main/scala/org/apache/spark/shuffle/IndexShuffleBlockResolver.scala ---
@@ -40,10 +39,17 @@ import IndexShuffleBlockResolver.NOOP_REDUCE_ID
*/
// Note: Changes to the format in this file should be kept in sync with
//
org.apache.spark.network.shuffle.ExternalShuffleBlockResolver#getSortBasedShuffleBlockData().
-private[spark] class IndexShuffleBlockResolver(conf: SparkConf) extends
ShuffleBlockResolver
+private[spark] class IndexShuffleBlockResolver(
+ conf: SparkConf,
+ _blockManager: BlockManager = null)
+ extends ShuffleBlockResolver
with Logging {
- private lazy val blockManager = SparkEnv.get.blockManager
+ private lazy val blockManager = if (_blockManager == null) {
+ SparkEnv.get.blockManager
+ } else {
+ _blockManager
+ }
--- End diff --
or
```
Option(_blockManager).getOrElse(SparkEnv.getBlockManager)
```
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