keith-turner commented on PR #5726:
URL: https://github.com/apache/accumulo/pull/5726#issuecomment-3075301997
Seeing some nice results experimenting with these changes. With the default
settings on this change, ran a test w/ 100 tablets w/ continual bulk import
into 20 random tablets. There were 16 compactors, 8 of which would always
fail. After 15 mins saw the following counts using the default settings.
```
$ grep "Compaction completed" coordinator.log | wc
552 7176 145757
$ grep "Compaction failed" coordinator.log | wc
1270 15240 292997
```
Restarted the same test setting `compactor.failure.backoff.interval=3s` and
saw the following counts after 15 mins.
```
$ grep "Compaction completed" coordinator.log | wc
322 4186 84946
$ grep "Compaction failed" coordinator.log | wc
28 336 6464
```
My suspicion is there were more successful compactions in the first case
because the avg files per tablet was higher because of the failed compactions
delaying compactions. Going to do some more digging and see if that is the
case.
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