[ https://issues.apache.org/jira/browse/HADOOP-9377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13595595#comment-13595595 ]
Suresh Srinivas commented on HADOOP-9377: ----------------------------------------- James, just posting the diff as attachment is sufficient. Also when you wan to post code snippets, you could surround it with \{code\}\{code\} to format it as code. See for details - https://issues.apache.org/jira/secure/WikiRendererHelpAction.jspa?section=texteffects (or click the question mark below the comment box) > FTPFileSystem.listStatus() runs very slow, due to inappropriate call of > filePath.makeQualified > ---------------------------------------------------------------------------------------------- > > Key: HADOOP-9377 > URL: https://issues.apache.org/jira/browse/HADOOP-9377 > Project: Hadoop Common > Issue Type: Bug > Components: fs > Affects Versions: 2.0.3-alpha > Reporter: James Yu > Attachments: HADOOP-9377.diff > > > FTPFileSystem.listStatus() calls > getFileStatus(ftpFiles[i], absolute) calls > new FileStatus(....) calls > filePath.makeQualified(...) calls > fs.getWorkingDirectory() calls > getHomeDirectory() > which creates new FTP connection every time, to get the workdingDirectory. > this caused the FTPFileSystem.listStatus() takes long time to run (on average > 3-6 seconds per file in my test). > I attach a suggestion of fix in FTPFileSystem.java, only 4 lines of change. > after the fix, there's no slowness issue anymore. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira