Hadoop Distributed File System HDFS HDFS Namenode the

Hadoop Distributed File System 自由軟體實驗室

HDFS 運作方式？ HDFS 運作 Namenode (the master) 檔案路徑– 副本數 , 由哪幾個block組成 name: /users/joe. Yahoo/my. File - copies: 2, blocks: {1, 3} name: /users/bob. Yahoo/some. Data. gzip, copies: 3, blocks: {2, 4, 5} Metadata Client Datanodes (the slaves) I/O 2 1 1 4 2 5 3 4 5 7

功能為何 ？ POSIX Like 13