第1个回答 2017-02-12
hadoop有提供相应的脚本去验证文件目录是否存在的：
-bash-3.2$ hadoop fs -help
-test -[defsz] <path>: Answer various questions about <path>, with result via exit status.
-d return 0 if <path> is a directory.
-e return 0 if <path> exists.
-f return 0 if <path> is a file.
-s return 0 if file <path> is greater than zero bytes in size.
-z return 0 if file <path> is zero bytes in size.
else, return 1.本回答被提问者采纳
-bash-3.2$ hadoop fs -help
-test -[defsz] <path>: Answer various questions about <path>, with result via exit status.
-d return 0 if <path> is a directory.
-e return 0 if <path> exists.
-f return 0 if <path> is a file.
-s return 0 if file <path> is greater than zero bytes in size.
-z return 0 if file <path> is zero bytes in size.
else, return 1.本回答被提问者采纳
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