What's TableName.MYD.filepart file in MySQL table (myisam engine)

I got a TableName.MYD.filepart in MySQL Data开发者_运维技巧base ( myisam engine)

Anyone can figure out what's that file for? Appreciate!

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Did you transfer the table files with SCP ? Could mean your transfer was interrupted while copying and this file is the temporary file created before the transfer completed. (Maybe should be on ServerFault ?)