OAK-7123 - ChildNodeStateProvider does not return all immediate children

Add log for path when maxBufferSize changes. This would enable determining
sub tree having lots of children

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1820280 13f79535-47bb-0310-9956-ffa450edef68

oak-run/src/main/java/org/apache/jackrabbit/oak/index/indexer/document/flatfile/FlatFileStoreIterator.java

@@ -62,7 +62,10 @@ protected NodeStateEntry computeNext() {
     }
 
     private NodeStateEntry computeNextEntry() {
-        maxBufferSize = Math.max(maxBufferSize, buffer.size());
+        if (buffer.size() > maxBufferSize) {
+            maxBufferSize = buffer.size();
+            log.info("Max buffer size changed {} for path {}", maxBufferSize, current.getPath());
+        }
         if (!buffer.isEmpty()) {
             return buffer.remove();
         }