hadoop cosn工具不改变原来的fs.defaultFS配置即同时可以访问hdfs 和 cos,就像访问亚马逊s3那样：
直接通过：hadoop fs -ls -R s3n://path这样访问,目前通过https://cloud.tencent.com/document/product/436/6884进行了配置，没修改fs.defaultFS
通过：hadoop fs -ls -R cosn://bigdata-1251448501/查询报错：
java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.CosFileSystem not found
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2267)
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2652)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2665)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:93)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2701)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2683)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:372)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:325)
at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:235)
at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:218)
at org.apache.hadoop.fs.shell.Command.processRawArguments(Command.java:201)
at org.apache.hadoop.fs.shell.Command.run(Command.java:165)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:287)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.hadoop.fs.FsShell.main(FsShell.java:340)
Caused by: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.CosFileSystem not found
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2171)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2265)
... 16 more
相似问题