HBASE-16626 User customized RegionScanner from 1.X is incompatible with 2.0.0's off-heap part. (Charlie Qiangeng Xu)

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionScanner.java

@@ -115,4 +115,13 @@ public interface RegionScanner extends InternalScanner, Shipper {
    */
   boolean nextRaw(List<Cell> result, ScannerContext scannerContext)
       throws IOException;
+
+  /**
+   * Empty implementation to provide compatibility for user migrating from 1.X
+   * @see <a href="https://issues.apache.org/jira/browse/HBASE-16626">HBASE-16626</a>
+   */
+  @Override
+  default void shipped() throws IOException {
+    // do nothing
+  }
 }