[ https://issues.apache.org/jira/browse/HADOOP-16082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16755302#comment-16755302 ]
Akira Ajisaka commented on HADOOP-16082: ---------------------------------------- How about adding "-i" option to "hadoop fs -stat" instead of ls? > FsShell ls: Add option -i to print inode id > ------------------------------------------- > > Key: HADOOP-16082 > URL: https://issues.apache.org/jira/browse/HADOOP-16082 > Project: Hadoop Common > Issue Type: Improvement > Components: common > Affects Versions: 3.2.0, 3.1.1 > Reporter: Siyao Meng > Assignee: Siyao Meng > Priority: Major > Attachments: HADOOP-16082.001.patch > > > When debugging the FSImage corruption issue, I often need to know a file's or > directory's inode id. At this moment, the only way to do that is to use OIV > tool to dump the FSImage and look up the filename, which is very inefficient. > Here I propose adding option "-i" in FsShell that prints files' or > directories' inode id. > h2. Implementation > h3. For hdfs:// (HDFS) > fileId exists in HdfsLocatedFileStatus, which is already returned to > hdfs-client. We just need to print it in Ls#processPath(). > h3. For file:// (Local FS) > h4. Linux > Use java.nio. > h4. Windows > Windows has the concept of "File ID" which is similar to inode id. It is > unique in NTFS and ReFS. > h3. For other FS > The fileId entry will be "0" in FileStatus if it is not set. We could either > ignore or throw an exception. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org