HBASE-26189 Reduce log level of CompactionProgress notice to DEBUG

Reduce log level of CompactionProgress WARN "totalCompactingKVs=N less than
currentCompactedKVs=M" to DEBUG pending resolution of the underlying issue.

Author: apurtell

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/compactions/CompactionProgress.java

@@ -77,8 +77,10 @@ public void complete() {
    */
   public long getTotalCompactingKVs() {
     if (totalCompactingKVs < currentCompactedKVs) {
-      LOG.warn("totalCompactingKVs={} less than currentCompactedKVs={}",
+      if (LOG.isDebugEnabled()) {
+        LOG.debug("totalCompactingKVs={} less than currentCompactedKVs={}",
           totalCompactingKVs, currentCompactedKVs);
+      }
       return currentCompactedKVs;
     }
     return totalCompactingKVs;