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Hadoop（0.22以å‰ã‚„1.0.0）ã®HDFSã¯NameNodeãŒSPOF（å˜ä¸€éšœå®³ç‚¹ï¼‰ãªã®ã§ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚µãƒ¼ãƒãƒ¼ã‚„データã®â€œãƒãƒƒã‚¯ã‚¢ãƒƒãƒ—â€ã«ã¯å‘ã‹ãªã„ã¨ã„ã†è©±ã§ã™ã€‚ HDFS上ã«æ§‹ç¯‰ã•ã‚Œã¦ã„ã‚‹HBaseã®å ´åˆã€ï¼ˆHBase自身ã«ã¯SPOFã¯ç„¡ã„ã‘ã‚Œã©ã‚‚）HDFSã«SPOFãŒã‚ã‚‹ã®ã§ã€NameNodeã¯å†—長化ã—ãŸæ–¹ãŒè‰¯ã„よã†ã§ã™ã€‚ 冗長化ã«ã¯ä»¥ä¸‹ã®ã‚ˆã†ãªä»•çµ„ã¿ãŒè€ƒãˆã‚‰ã‚Œã¦ã„るよã†ã§ã™ã€‚ 続ãã‚’èªã‚€
MountableHDFS - HADOOP2 - Apache Software Foundation
[machine1] ~ > df -kh /export/hdfs/ Filesystem Size Used Avail Use% Mounted on fuse 4.1P 642T 3.5P 21% /export/hdfs [machine1] ~ > ls /export/hdfs/ home tmp Trash user usr var These projects (enumerated below) allow HDFS to be mounted (on most flavors of Unix) as a standard file system using the mount command. Once mounted, the user can operate on an instance of hdfs using standard Unix utilities
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