[HADOOP-17060] listStatus and getFileStatus behave inconsistent in the case of ViewFs implementation for isDirectory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0, 3.1.0
• Fix Version/s: 3.2.2, 3.3.1, 3.4.0
• Component/s: viewfs
• Labels: viewfs
• Hadoop Flags: Reviewed
• Assignee: Uma Maheswara Rao G
• Reporter: Srinivasu Majeti
• Created: 21/May/20 13:38
• Updated: 10/Jun/21 07:56
• Resolved: 10/Jun/20 22:01

Description

listStatus implementation in ViewFs and getFileStatus does not return consistent values for an element on isDirectory value. listStatus returns isDirectory of all softlinks as false and getFileStatus returns isDirectory as true.

[hdfs@c3121-node2 ~]$ /usr/jdk64/jdk1.8.0_112/bin/java -cp `hadoop classpath`:./hdfs-append-1.0-SNAPSHOT.jar LauncherGetFileStatus "/"
FileStatus of viewfs://c3121/testme21may isDirectory:false
FileStatus of viewfs://c3121/tmp isDirectory:false
FileStatus of viewfs://c3121/foo isDirectory:false
FileStatus of viewfs://c3121/tmp21may isDirectory:false
FileStatus of viewfs://c3121/testme isDirectory:false
FileStatus of viewfs://c3121/testme2 isDirectory:false <--- returns false
FileStatus of / isDirectory:true
[hdfs@c3121-node2 ~]$ /usr/jdk64/jdk1.8.0_112/bin/java -cp `hadoop classpath`:./hdfs-append-1.0-SNAPSHOT.jar LauncherGetFileStatus /testme2
FileStatus of viewfs://c3121/testme2/dist-copynativelibs.sh isDirectory:false
FileStatus of viewfs://c3121/testme2/newfolder isDirectory:true
FileStatus of /testme2 isDirectory:true <--- returns true
[hdfs@c3121-node2 ~]$ 

Issue Links

• is related to: HADOOP-17029 ViewFS does not return correct user/group and ACL
• relates to: HDFS-15289 Allow viewfs mounts with HDFS/HCFS scheme and centralized mount table
• links to: GitHub Pull Request #2061