[HDDS-3229] 2-way commit did not happen when WRITE failure injected in one of the datanodes of a piepeline

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Fix Version/s: 0.5.0
• Labels: fault_injection
• Assignee: Shashikant Banerjee
• Reporter: Nilotpal Nandi
• Created: 18/Mar/20 12:19
• Updated: 19/Mar/20 05:24
• Resolved: 19/Mar/20 05:24

Description

This is an extension of bug HDDS-3214.

steps taken :

1) Mounted noise injection FUSE on all datanodes

2) Selected 1 datanode from each open pipeline (factor=3)

3) Injected WRITE FAILURE noise with error code - ENOENT on "hdds.datanode.dir" path of list of datanodes selected in step 2)

4) start PUT key operation of size  32 MB.

 

Observation :

----------------

PUT key operation failed. 

As there is a WRITE failure in one of the datanodes in the pipeline, 3 way commit should fail.

But it should proceed with 2-way commit and the operation should have been successful.