Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/10705#discussion_r53744546
--- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
---
@@ -318,7 +316,11 @@ private[spark] class BlockManager(
* may not know of).
*/
def getMatchingBlockIds(filter: BlockId => Boolean): Seq[BlockId] = {
- (blockInfo.asScala.keys ++
diskBlockManager.getAllBlocks()).filter(filter).toSeq
+ val matches =
+ (blockInfoManager.entries.map(_._1) ++
diskBlockManager.getAllBlocks()).filter(filter)
+ // The `toArray` is necessary here in order to force the list to be
materialized so that we
+ // don't try to serialize a lazy iterator when responding to client
requests.
+ matches.toArray.toSeq
--- End diff --
Fixed.
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