Index: oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java
===================================================================
--- oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java	(revision 1746097)
+++ oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java	(working copy)
@@ -866,7 +866,8 @@
         LinkedList<File> toRemove = newLinkedList();
         Set<UUID> cleanedIds = newHashSet();
         for (TarReader reader : cleaned.keySet()) {
-            cleaned.put(reader, reader.cleanup(referencedIds, cleanedIds));
+            cleaned.put(reader, reader.cleanup(referencedIds, cleanedIds,
+                    compactionStrategy));
             if (shutdown) {
                 gcMonitor.info("TarMK GC #{}: cleanup interrupted", gcCount);
                 break;
Index: oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java
===================================================================
--- oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java	(revision 1746097)
+++ oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java	(working copy)
@@ -52,6 +52,7 @@
 
 import org.apache.commons.io.FileUtils;
 import org.apache.jackrabbit.oak.plugins.segment.SegmentGraph.SegmentGraphVisitor;
+import org.apache.jackrabbit.oak.plugins.segment.compaction.CompactionStrategy;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -749,7 +750,8 @@
      * @return this (if the file is kept as is), or the new generation file, or
      *         null if the file is fully garbage
      */
-    synchronized TarReader cleanup(Set<UUID> referencedIds, Set<UUID> removed) throws IOException {
+    synchronized TarReader cleanup(Set<UUID> referencedIds, Set<UUID> removed,
+            CompactionStrategy strategy) throws IOException {
         String name = file.getName();
         log.debug("Cleaning up {}", name);
 
@@ -786,7 +788,8 @@
             removed.addAll(cleaned);
             logCleanedSegments(cleaned);
             return null;
-        } else if (size >= access.length() * 3 / 4 && graph != null) {
+        } else if (size >= access.length() * 3 / 4 && graph != null
+                && !strategy.isOfflineCompaction()) {
             // the space savings are not worth it at less than 25%,
             // unless this tar file lacks a pre-compiled segment graph
             // in which case we'll always generate a new tar file with