[jira] [Created] (HBASE-25828) CompactionProgress WARNS: "totalCompactingKVs=N less than currentCompactedKVs=M"

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

Andrew Kyle Purtell created HBASE-25828:
-------------------------------------------

             Summary: CompactionProgress WARNS: "totalCompactingKVs=N less than currentCompactedKVs=M"
                 Key: HBASE-25828
                 URL: https://issues.apache.org/jira/browse/HBASE-25828
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.4.3
            Reporter: Andrew Kyle Purtell
             Fix For: 2.4.4, 3.0.0-alpha-1, 2.5.0


Lots of warnings like:

{noformat}
2021-04-30 00:55:15,436 WARN  [regionserver/ip-172-31-63-65:8120] 
compactions.CompactionProgress: totalCompactingKVs=15589 less than currentCompactedKVs=21411
{noformat}

{noformat}
2021-04-30 00:55:15,437 WARN  [regionserver/ip-172-31-63-65:8120] 
compactions.CompactionProgress: totalCompactingKVs=21916 less than currentCompactedKVs=33328
{noformat}

{noformat}
2021-04-30 00:55:15,438 WARN  [regionserver/ip-172-31-63-65:8120]
compactions.CompactionProgress: totalCompactingKVs=89731 less than currentCompactedKVs=92808
{noformat}

A couple of issues:

- Is there a way to make CompactionProgress more reliable? I seem to recall this is the second or third time around the block on this.

- This is annoying because compaction progress isn't always accurate, but this information is not used to determine anything significant, so WARN level is a bit much. (Or, if this is a real correctness problem, see point above.)



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