diff --git a/underfs/oss/src/main/java/tachyon/underfs/oss/OSSInputStream.java b/underfs/oss/src/main/java/tachyon/underfs/oss/OSSInputStream.java
index <HASH>..<HASH> 100644
--- a/underfs/oss/src/main/java/tachyon/underfs/oss/OSSInputStream.java
+++ b/underfs/oss/src/main/java/tachyon/underfs/oss/OSSInputStream.java
@@ -65,4 +65,9 @@ public class OSSInputStream extends InputStream {
     int ret = mInputStream.read(b, off, len);
     return ret;
   }
+
+  @Override
+  public long skip(long n) throws IOException {
+    throw new IOException("unsupported skip in OSSInputStream currently.");
+  }
 }
[TACHYON-<I>] Merge Implement the OSSUnderFileSystem. Throw exception when call OSSInputStream.skip for the oss sdk not provide yet.