squito commented on a change in pull request #23688: [SPARK-25035][Core]
Avoiding memory mapping at disk-stored blocks replication
URL: https://github.com/apache/spark/pull/23688#discussion_r258612668
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File path: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
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@@ -221,6 +222,184 @@ private[spark] class BlockManager(
new BlockManager.RemoteBlockDownloadFileManager(this)
private val maxRemoteBlockToMem =
conf.get(config.MAX_REMOTE_BLOCK_SIZE_FETCH_TO_MEM)
+ /**
+ * @param blockSize the decrypted size of the block
+ */
+ private abstract class BlockStoreUpdater[T](
Review comment:
I'd add a very short description of the class to this doc, eg. "Abstraction
for storing blocks from bytes, whether they start in memory or on disk."
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