[HADOOP-14151] Swift treats empty file as directory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 3.0.0-alpha4
• Component/s: fs/swift
• Target Version/s: 3.0.0-alpha4
• Assignee: Unassigned
• Reporter: John Zhuge
• Created: 07/Mar/17 21:28
• Updated: 18/Apr/17 04:36
• Resolved: 18/Apr/17 04:25

Description

Unit test TestSwiftContractRootDir#testRmNonEmptyRootDirNonRecursive fails at assertIsFile(file). This leads me to suspect swift treats 0-len file as directory. Confirmed by the following experiment:

$ ls -l /tmp/zero /tmp/abc
-rw-rw-r--  1 jzhuge  wheel  4 Mar  7 13:19 /tmp/abc
-rw-rw-r--  1 jzhuge  wheel  0 Mar  7 13:19 /tmp/zero

$ bin/hadoop fs -put /tmp/zero /tmp/abc swift://jzswift.rackspace/
2017-03-07 13:24:09,321 INFO snative.SwiftNativeFileSystemStore: mv  jzswift/zero._COPYING_ swift://jzswift.rackspace/zero

$ bin/hadoop fs -touchz swift://jzswift.rackspace/touchz

$ bin/hadoop fs -ls swift://jzswift.rackspace/
Found 3 items
-rw-rw-rw-   1          4 2017-03-07 13:36 swift://jzswift.rackspace/abc
drwxrwxrwx   -          0 2017-03-07 13:28 swift://jzswift.rackspace/touchz
drwxrwxrwx   -          0 2017-03-07 13:32 swift://jzswift.rackspace/zero

Issue Links

• duplicates: HADOOP-13734 Swift lists empty file as directory