[HUDI-5950] Fix pending instants determination for MDT compaction

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.13.1, 0.12.3
• Component/s: metadata
• Labels: pull-request-available
• Assignee: sivabalan narayanan
• Reporter: sivabalan narayanan
• Created: 17/Mar/23 19:44
• Updated: 30/Mar/23 02:22
• Resolved: 30/Mar/23 02:22

Description

Currently the logic to deduce pending instants in MDT is as below

• a = we get latest completed delta commit from MDT.
• Find any inflights in DT timeline before {a}

and if we don't find any such inflights, we will go ahead and may be compact MDT.

But what incase the latest delta commit in MDT succeeded in MDT, but failed in DT. so, it could potentially result in triggering compaction in MDT which should not happen. 

 

So, the right fix is 

• a = we get latest completed delta commit from MDT.
• Find any inflights in DT timeline before or equals to {a}

This should take care of not triggering compaction in MDT when here are inflights in DT which is committed to MDT. 

 

Issue Links

• links to: GitHub Pull Request #8223