[jira] [Created] (HUDI-5950) Fix pending instants determination for MDT compaction

["sivabalan narayanan (Jira)" <ji...@apache.org>]

sivabalan narayanan created HUDI-5950:
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             Summary: Fix pending instants determination for MDT compaction
                 Key: HUDI-5950
                 URL: https://issues.apache.org/jira/browse/HUDI-5950
             Project: Apache Hudi
          Issue Type: Bug
          Components: metadata
            Reporter: sivabalan narayanan


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. 

 



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