HBASE-20935 HStore.removeCompactedFiles should log in case it is unable to delete a file (Vishal Khandelwal)

Conflicts:
	hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java

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

@@ -2554,6 +2554,11 @@ public class HStore implements Store, HeapSize, StoreConfigInformation, Propagat
             r.close(true);
             // Just close and return
             filesToRemove.add(file);
+          } else {
+            LOG.info("Can't archive compacted file " + file.getPath()
+                + " because of either isCompactedAway = " + file.isCompactedAway()
+                + " or file has reference, isReferencedInReads = " + file.isReferencedInReads()
+                + ", skipping for now.");
           }
         } catch (Exception e) {
           LOG.error("Exception while trying to close the compacted store file {}",