Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/2969#discussion_r19451609
--- Diff: core/src/main/scala/org/apache/spark/network/ManagedBuffer.scala
---
@@ -81,7 +81,13 @@ final class FileSegmentManagedBuffer(val file: File, val
offset: Long, val lengt
// Just copy the buffer if it's sufficiently small, as memory
mapping has a high overhead.
if (length < MIN_MEMORY_MAP_BYTES) {
val buf = ByteBuffer.allocate(length.toInt)
- channel.read(buf, offset)
+ channel.position(offset)
+ while (buf.remaining() != 0) {
+ if (channel.read(buf) == -1) {
+ throw new IOException("Reached EOF before filling buffer\n" +
+
s"offset=$offset\nfile=${file.getName}\nbuf.remaining=${buf.remaining}")
--- End diff --
getName does not return the full path, we should probably use the path
instead
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