hadoop hdfs設置quota
阿新 • • 發佈:2017-10-11
計算 寫入 repl locks pac user clas 兩個 ati
quota分為兩種:
1. 目錄下的文件數限制
2. 目錄下的空間大小
//設置文件數 hdfs dfsadmin -setQuota 1000000 /user/jenkin //設置空間大小 hdfs dfsadmin -setSpaceQuota 100g /user/jenkin //查看quota hadoop fs -count -q /user/jenkin
[[email protected] ~]# hadoop fs -count -q /user/jenkin 1000000 999182 107374182400 100052379973 26 792 2440600809 /user/jenkin
列對應:
QUOTA REMAINING_QUOTA SPACE_QUOTA REMAINING_SPACE_QUOTA DIR_COUNT FILE_COUNT
計算公式:
QUOTA – (DIR_COUNT + FILE_COUNT) = REMAINING_QUOTA
SPACE_QUOTA – CONTENT_SIZE = REMAINING_SPACE_QUOTA
space quota 的設定所看的不是上傳的檔案大小,是寫入 HDFS 的所有 block size,假設一個檔案要寫入兩個blocks,在core-site.xml設定dfs.block.size為64MB,dfs.replication為3,那所需空間:2*64MB*3=384MB
hadoop hdfs設置quota