fixed encoding example

parse/src/main/java/com/alibaba/otter/canal/parse/inbound/mysql/dbsync/LogEventConvert.java

@@ -88,8 +88,6 @@ public class LogEventConvert extends AbstractCanalLifeCycle implements BinlogPar
     private volatile AviaterRegexFilter nameBlackFilter;
 
     private TableMetaCache              tableMetaCache;
-    private String                      binlogFileName      = "mysql-bin.000001";
-
     private Charset                     charset             = Charset.defaultCharset();
     private boolean                     filterQueryDcl      = false;
     private boolean                     filterQueryDml      = false;
@@ -761,6 +759,8 @@ public class LogEventConvert extends AbstractCanalLifeCycle implements BinlogPar
                         } else {
                             // byte数组，直接使用iso-8859-1保留对应编码，浪费内存
                             columnBuilder.setValue(new String((byte[]) value, ISO_8859_1));
+                            // columnBuilder.setValueBytes(ByteString.copyFrom((byte[])
+                            // value));
                             javaType = Types.BLOB;
                         }
                         break;