public static int getRecordSize() {
      return Version_Field_Size_In_Bytes + Delete_Field_Size_In_Bytes + Crc_Size;
    }
- - - - - - - - - - - - - - - - - - -
|         |               |            |
| version |   delete byte |    Crc     |
|(2 bytes)|    (1 byte)   |  (8 bytes) |
|         |               |            |
 - - - - - - - - - - - - - - - - - - -
 version         - The version of the update record

 delete byte     - Takes value 0 or 1. If it is set to 1, it signifies that the blob is deleted. The field
                   is required to be able to support undelete in the future if required.

 crc             - The crc of the update record
ambry-messageformat/src/main/java/com/github/ambry/messageformat/MessageFormatRecord.java