[HADOOP-15082] add AbstractContractRootDirectoryTest test for mkdir / ; wasb to implement the test

• Type: Sub-task
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.9.0
• Component/s: fs, fs/azure, test
• Target Version/s: 3.5.0
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 01/Dec/17 11:08
• Updated: 04/Jan/24 11:23

Description

I managed to get a stack trace on an older version of WASB with some coding doing a mkdir(new Path("/"))....some of the ranger parentage checks didn't handle that specific case.

1. Add a new root Fs contract test for this operation
2. Have WASB implement the test suite as an integration test.
3. if the test fails shows a problem fix