Hadoop Pig fs 测试命令
Hadoop Pig fs test command
想知道这行是什么意思？四处搜索但找不到此命令的参考，
Pig.fs("test -e " + pathToCheck) == 0:
提前致谢，
林
使用命令行工具和运行 hadoop fs -help得到：
-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.
想知道这行是什么意思？四处搜索但找不到此命令的参考，
Pig.fs("test -e " + pathToCheck) == 0:
提前致谢， 林
使用命令行工具和运行 hadoop fs -help得到：
-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.