diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/DfsInserterTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/DfsInserterTest.java
index adf577b0f..a54c81be4 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/DfsInserterTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/DfsInserterTest.java
@@ -29,11 +29,16 @@
 import org.eclipse.jgit.junit.JGitTestUtil;
 import org.eclipse.jgit.junit.TestRng;
 import org.eclipse.jgit.lib.AbbreviatedObjectId;
+import org.eclipse.jgit.lib.CommitBuilder;
 import org.eclipse.jgit.lib.Constants;
+import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.ObjectInserter;
 import org.eclipse.jgit.lib.ObjectLoader;
 import org.eclipse.jgit.lib.ObjectReader;
+import org.eclipse.jgit.lib.PersonIdent;
+import org.eclipse.jgit.lib.TagBuilder;
+import org.eclipse.jgit.lib.TreeFormatter;
 import org.eclipse.jgit.util.IO;
 import org.eclipse.jgit.util.RawParseUtils;
 import org.junit.Before;
@@ -240,6 +245,50 @@ public void testNoCheckExisting() throws IOException {
 		}
 	}
 
+	@Test
+	public void testObjectSizePopulated() throws IOException {
+		// Blob
+		byte[] contents = Constants.encode("foo");
+
+		// Commit
+		PersonIdent person = new PersonIdent("Committer a", "jgit@eclipse.org");
+		CommitBuilder c = new CommitBuilder();
+		c.setAuthor(person);
+		c.setCommitter(person);
+		c.setTreeId(ObjectId
+				.fromString("45c4c6767a3945815371a7016532751dd558be40"));
+		c.setMessage("commit message");
+
+		// Tree
+		TreeFormatter treeBuilder = new TreeFormatter(2);
+		treeBuilder.append("filea", FileMode.REGULAR_FILE, ObjectId
+				.fromString("45c4c6767a3945815371a7016532751dd558be40"));
+		treeBuilder.append("fileb", FileMode.GITLINK, ObjectId
+				.fromString("1c458e25ca624bb8d4735bec1379a4a29ba786d0"));
+
+		// Tag
+		TagBuilder tagBuilder = new TagBuilder();
+		tagBuilder.setObjectId(
+				ObjectId.fromString("c97fe131649e80de55bd153e9a8d8629f7ca6932"),
+				Constants.OBJ_COMMIT);
+		tagBuilder.setTag("short name");
+
+		try (DfsInserter ins = (DfsInserter) db.newObjectInserter()) {
+			ObjectId aBlob = ins.insert(Constants.OBJ_BLOB, contents);
+			assertEquals(contents.length,
+					ins.objectMap.get(aBlob).getFullSize());
+
+			ObjectId aCommit = ins.insert(c);
+			assertEquals(174, ins.objectMap.get(aCommit).getFullSize());
+
+			ObjectId tree = ins.insert(treeBuilder);
+			assertEquals(66, ins.objectMap.get(tree).getFullSize());
+
+			ObjectId tag = ins.insert(tagBuilder);
+			assertEquals(76, ins.objectMap.get(tag).getFullSize());
+		}
+	}
+
 	private static String readString(ObjectLoader loader) throws IOException {
 		return RawParseUtils.decode(readStream(loader));
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsInserter.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsInserter.java
index ceb1769de..5f25905a5 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsInserter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsInserter.java
@@ -129,7 +129,7 @@ public ObjectId insert(int type, byte[] data, int off, int len)
 		long offset = beginObject(type, len);
 		packOut.compress.write(data, off, len);
 		packOut.compress.finish();
-		return endObject(id, offset);
+		return endObject(id, offset, len, type);
 	}
 
 	@Override
@@ -148,16 +148,17 @@ public ObjectId insert(int type, long len, InputStream in)
 		md.update(Constants.encodeASCII(len));
 		md.update((byte) 0);
 
-		while (0 < len) {
-			int n = in.read(buf, 0, (int) Math.min(buf.length, len));
+		long inLength = len;
+		while (0 < inLength) {
+			int n = in.read(buf, 0, (int) Math.min(buf.length, inLength));
 			if (n <= 0)
 				throw new EOFException();
 			md.update(buf, 0, n);
 			packOut.compress.write(buf, 0, n);
-			len -= n;
+			inLength -= n;
 		}
 		packOut.compress.finish();
-		return endObject(md.toObjectId(), offset);
+		return endObject(md.toObjectId(), offset, len, type);
 	}
 
 	private byte[] insertBuffer(long len) {
@@ -238,10 +239,12 @@ private long beginObject(int type, long len) throws IOException {
 		return offset;
 	}
 
-	private ObjectId endObject(ObjectId id, long offset) {
+	private ObjectId endObject(ObjectId id, long offset, long inflatedSize, int type) {
 		PackedObjectInfo obj = new PackedObjectInfo(id);
+		obj.setType(type);
 		obj.setOffset(offset);
 		obj.setCRC((int) packOut.crc32.getValue());
+		obj.setFullSize(inflatedSize);
 		objectList.add(obj);
 		objectMap.addIfAbsent(obj);
 		return id;