HBASE-28142 Region Server Logs getting spammed with warning when storefile has no reader

Signed-off-by: Nihal Jain <nihaljain@apache.org>
Signed-off-by: Rajeshbabu Chintaguntla <rajeshbabu@apache.org>

Author: anchal246

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

@@ -1616,7 +1616,7 @@ protected void refreshStoreSizeAndTotalBytes() throws IOException {
     for (HStoreFile hsf : this.storeEngine.getStoreFileManager().getStorefiles()) {
       StoreFileReader r = hsf.getReader();
       if (r == null) {
-        LOG.warn("StoreFile {} has a null Reader", hsf);
+        LOG.debug("StoreFile {} has a null Reader", hsf);
         continue;
       }
       this.storeSize.addAndGet(r.length());
@@ -1785,7 +1785,7 @@ public int getCompactedFilesCount() {
   private LongStream getStoreFileAgeStream() {
     return this.storeEngine.getStoreFileManager().getStorefiles().stream().filter(sf -> {
       if (sf.getReader() == null) {
-        LOG.warn("StoreFile {} has a null Reader", sf);
+        LOG.debug("StoreFile {} has a null Reader", sf);
         return false;
       } else {
         return true;