当尝试从Java中读取HDFS中的文件时，“错误的FS …期望：file：///”
我无法使用Java从HDFS读取文件：
String hdfsUrl = "hdfs://:"; Configuration configuration = new Configuration(); configuration.set("fs.defaultFS", hdfsUrl); FileSystem fs = FileSystem.get(configuration); Path filePath = new Path(hdfsUrl + "/projects/harmonizome/data/achilles/attribute_list_entries.txt.gz"); FSDataInputStream fsDataInputStream = fs.open(filePath); SEVERE: Servlet.service() for servlet [edu.mssm.pharm.maayanlab.Harmonizome.api.DownloadAPI] in context with path [/Harmonizome] threw exception java.lang.IllegalArgumentException: Wrong FS: hdfs://146.203.54.165:8020/projects/harmonizome/data/achilles/attribute_list_entries.txt.gz, expected: file:/// at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:310) at org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:47) at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:357) at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:245) at org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.(ChecksumFileSystem.java:125) at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:283) at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:356) at edu.mssm.pharm.maayanlab.Harmonizome.api.DownloadAPI.readLines(DownloadAPI.java:37) at edu.mssm.pharm.maayanlab.Harmonizome.api.DownloadAPI.doGet(DownloadAPI.java:27) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) ... 我没有设置我们的HDFS，所以我不知道我不知道的是什么。 任何帮助表示赞赏。
尝试这个：
Configuration configuration = new Configuration(); FileSystem fs = FileSystem.get(new URI(), configuration); Path filePath = new Path(); FSDataInputStream fsDataInputStream = fs.open(filePath); BufferedReader br = new BufferedReader(new InputStreamReader(fsDataInputStream));
请参阅http://techidiocy.com/java-lang-illegalargumentexception-wrong-fs-expected-file/
解决了类似的问题。