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Kiran Kumar M R commented on HADOOP-7418: ----------------------------------------- Current behavior of trunk and 7.2 is if {{//}} appears in the beginning of path, it is expected to have scheme: before that. So restriction is that {{//}} is not supported only in beginning of path as its used to identify scheme. Samples: {code} >hadoop fs -ls //wc-out//_temporary ls: No FileSystem for scheme: null {code} {{//}} is allowed later in path. Below path is valid {code} >hadoop fs -ls /wc-out//_temporary Found 1 items drwxr-xr-x - KiranKumar supergroup 0 2015-05-04 02:41 /wc-out/_temporary/1 {code} {{//}} is also valid if path has proper scheme {code} >hadoop fs -ls hdfs://kiran-hpenvy//wc-out//_temporary Found 1 items drwxr-xr-x - KiranKumar supergroup 0 2015-05-04 02:41 hdfs://kiran-hpenvy/wc-out/_temporary/1 {code} I think existing path behavior is fine. This issue can be closed. Others please comment. > support for multiple slashes in the path separator > -------------------------------------------------- > > Key: HADOOP-7418 > URL: https://issues.apache.org/jira/browse/HADOOP-7418 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 0.23.0 > Environment: Linux running JDK 1.6 > Reporter: Sudharsan Sampath > Assignee: Andrew Look > Priority: Minor > Labels: BB2015-05-TBR, newbie > Attachments: HADOOP-7418--20110719.txt, HADOOP-7418.txt, > HADOOP-7418.txt, HDFS-1460.txt, HDFS-1460.txt > > > the parsing of the input path string to identify the uri authority conflicts > with the file system paths. For instance the following is a valid path in > both the linux file system and the hdfs. > //user/directory1//directory2. > While this works perfectly fine in the command line for manipulating hdfs, > the same fails when specified as the input path for a mapper class with the > following expcetion. > Exception in thread "main" java.net.UnknownHostException: unknown host: user > at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:195) > as the org.apache.hadoop.fs.Path class assumes the string that follows the > '//' to be an uri authority -- This message was sent by Atlassian JIRA (v6.3.4#6332)