Index: oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java	(revision 5ef5da101181caf82439b724617fd6a6528ffff4)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java	(revision )
@@ -496,6 +496,8 @@
         long start = System.nanoTime();
         log.info("TarMK compaction running");
 
+        tracker.getWriter().flush();
+
         SegmentWriter writer = new SegmentWriter(this, tracker);
         Compactor compactor = new Compactor(writer);
 
@@ -515,7 +517,7 @@
             // Rebase (and compact) those changes on top of the
             // compacted state before retrying to set the head.
             SegmentNodeState head = getHead();
-            after = compactor.compact(before, head);
+            after = compactor.compact(after, head);
             before = head;
             writer.flush();
         }