Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3670#discussion_r23883434
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -513,13 +516,44 @@ private[spark] object Utils extends Logging {
Files.move(sourceFile, destFile)
--- End diff --
Hmmm...
scala> val from = new File("/tmp/foo")
from: java.io.File = /tmp/foo
scala> val to = new File("/home/vanzin/tmp/foo")
to: java.io.File = /home/vanzin/tmp/foo
scala> Files.move(from, to)
java.io.FileNotFoundException: /tmp/foo (Is a directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:120)
at
com.google.common.io.Files$FileByteSource.openStream(Files.java:124)
at
com.google.common.io.Files$FileByteSource.openStream(Files.java:114)
at com.google.common.io.ByteSource.copyTo(ByteSource.java:202)
at com.google.common.io.Files.copy(Files.java:436)
at com.google.common.io.Files.move(Files.java:651)
I think it doesn't work if `from` and `to` are on different file systems
(such as in my case above).
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