zsxwing commented on a change in pull request #23590: [SPARK-26665][Core]Fix a
bug that BlockTransferService.fetchBlockSync may hang forever
URL: https://github.com/apache/spark/pull/23590#discussion_r249636851
##########
File path:
core/src/main/scala/org/apache/spark/network/BlockTransferService.scala
##########
@@ -107,10 +107,14 @@ abstract class BlockTransferService extends
ShuffleClient with Closeable with Lo
case e: EncryptedManagedBuffer =>
result.success(e)
case _ =>
- val ret = ByteBuffer.allocate(data.size.toInt)
- ret.put(data.nioByteBuffer())
- ret.flip()
- result.success(new NioManagedBuffer(ret))
+ try {
+ val ret = ByteBuffer.allocate(data.size.toInt)
+ ret.put(data.nioByteBuffer())
+ ret.flip()
+ result.success(new NioManagedBuffer(ret))
+ } catch {
+ case e: Throwable => result.failure(e)
Review comment:
Yeah, that's propagated and the code calling `fetchBlockSync` will handle it.
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