Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/23040#discussion_r234395227 --- Diff: core/src/main/scala/org/apache/spark/util/io/ChunkedByteBuffer.scala --- @@ -222,7 +222,7 @@ private[spark] class ChunkedByteBufferInputStream( dispose: Boolean) extends InputStream { - private[this] var chunks = chunkedByteBuffer.getChunks().iterator + private[this] var chunks = chunkedByteBuffer.getChunks().filter(_.hasRemaining).iterator --- End diff -- can you add a comment above, saying that we do this filter because `read` assumes `chunks` has no empty chunk?
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