[HDFS-13865] Improve fuse-dfs testing and dev docs

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: fuse-dfs
• Assignee: Unassigned
• Reporter: Gabor Bota
• Created: 24/Aug/18 15:26
• Updated: 24/Aug/18 15:26

Description

We had a bug (by customer escalation) in fuse-dfs and we provided a fix. Testing the patch was not straightforward, and we found no easy way to do that.

I file this jira for the following:

• Improve hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/fuse-dfs/doc/README with information on how to run native tests for fuse-dfs
• Describe what is hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/fuse-dfs/test/TestFuseDFS.java and how to run it.
• Resolve todos in hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/fuse-dfs/test/fuse_workload.c to add more test coverage:

  // TODO: implement/test access, mknod, symlink
  // TODO: rmdir on non-dir, non-empty dir
  // TODO: test unlink-during-writing
  // TODO: test weird open flags failing
  // TODO: test chown, chmod