milleruntime commented on a change in pull request #2342:
URL: https://github.com/apache/accumulo/pull/2342#discussion_r745042747



##########
File path: 
server/tserver/src/main/java/org/apache/accumulo/tserver/tablet/Tablet.java
##########
@@ -811,7 +812,7 @@ DataFileValue minorCompact(InMemoryMap memTable, TabletFile 
tmpDatafile, TabletF
         var storedFile = 
getDatafileManager().bringMinorCompactionOnline(tmpDatafile, newDatafile,
             new DataFileValue(stats.getFileSize(), stats.getEntriesWritten()), 
commitSession,
             flushId);
-        compactable.filesAdded(true, List.of(storedFile));
+        storedFile.ifPresent(stf -> compactable.filesAdded(true, 
List.of(stf)));

Review comment:
       Yes. A NPE would be thrown. I don't know if it affected anything with 
compactions since it only happens when no file gets written.




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