Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/16927
Hm.. @felixcheung, the origin seems from Hadoop's issue.
```
java.io.IOException: (null) entry in command string: null chmod 0644
C:\Users\appveyor\AppData\Local\Temp\1\RtmpCuLueF\spark-mlpb486948329c.tmp\rMetadata\_temporary\0\_temporary\attempt_20170214140636_0069_m_000000_70\part-00000
at
org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:762)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:859)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:842)
at
org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:661)
at
org.apache.hadoop.fs.ChecksumFileSystem$1.apply(ChecksumFileSystem.java:501)
at
org.apache.hadoop.fs.ChecksumFileSystem$FsOperation.run(ChecksumFileSystem.java:482)
at
org.apache.hadoop.fs.ChecksumFileSystem.setPermission(ChecksumFileSystem.java:498)
at
org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:467)
at
org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:433)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:801)
```
Probably it is https://issues.apache.org/jira/browse/HADOOP-10775. I will
file an issue there after testing this with Hadoop 2.8+ when I am able to test.
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