About the configuration of HDFS dfs.data.dir

if I set up more than one data.dir in a datanode on the same hard disk, will it increase the probability of writing to that disk when hdfs performs write operations

Jun.16,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b320a3-2bdc5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b320a3-2bdc5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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