jelmini commented on code in PR #800:
URL: https://github.com/apache/jackrabbit-oak/pull/800#discussion_r1052445924


##########
oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/file/tar/TarWriter.java:
##########
@@ -183,7 +183,14 @@ void flush() throws IOException {
             }
 
             if (doFlush) {
-                archive.flush();
+                archive.flush(() -> {
+                    try {
+                        writeBinaryReferences();
+                        writeGraph();
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);

Review Comment:
   An alternative would be to declare a functional interface declaring an 
`IOException`:
   
   ```java
   interface OnFlushSuccessCallback {
     void run() throws IOException;
   }
   ```
   Then use it instead of `Runnable`:
   ```java
   default void flush(OnFlushSuccessCallback onSuccess) throws IOException
   ```
   With this, no need to catch the `IOException` to wrap it in a 
`RuntimeException` :
   ```java
    archive.flush(() -> {
        writeBinaryReferences();
        writeGraph();
   });
   ```



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