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Adam Sotona commented on HADOOP-14444: -------------------------------------- Hi guys, this new ftp implementation actually saved several my projects. Original FTP filesystem implementation didn't work for way too many problems (passwords, proxies, performance, timeouts, etc...). My current use cases are: - Linux-based Hadoop clusters behind Http proxy - public or password-protected FTP servers with tons of medium to big files - use with the standalone copy (for servers with limited connections) and with distcp (for load-balanced servers where I can afford heavy parallelisation) And it works! Please speedup integration of this patch. Thank you, Adam > New implementation of ftp and sftp filesystems > ---------------------------------------------- > > Key: HADOOP-14444 > URL: https://issues.apache.org/jira/browse/HADOOP-14444 > Project: Hadoop Common > Issue Type: New Feature > Components: fs > Affects Versions: 2.8.0 > Reporter: Lukas Waldmann > Assignee: Lukas Waldmann > Attachments: HADOOP-14444.10.patch, HADOOP-14444.11.patch, > HADOOP-14444.12.patch, HADOOP-14444.13.patch, HADOOP-14444.2.patch, > HADOOP-14444.3.patch, HADOOP-14444.4.patch, HADOOP-14444.5.patch, > HADOOP-14444.6.patch, HADOOP-14444.7.patch, HADOOP-14444.8.patch, > HADOOP-14444.9.patch, HADOOP-14444.patch > > > Current implementation of FTP and SFTP filesystems have severe limitations > and performance issues when dealing with high number of files. Mine patch > solve those issues and integrate both filesystems such a way that most of the > core functionality is common for both and therefore simplifying the > maintainability. > The core features: > * Support for HTTP/SOCKS proxies > * Support for passive FTP > * Support for explicit FTPS (SSL/TLS) > * Support of connection pooling - new connection is not created for every > single command but reused from the pool. > For huge number of files it shows order of magnitude performance improvement > over not pooled connections. > * Caching of directory trees. For ftp you always need to list whole directory > whenever you ask information about particular file. > Again for huge number of files it shows order of magnitude performance > improvement over not cached connections. > * Support of keep alive (NOOP) messages to avoid connection drops > * Support for Unix style or regexp wildcard glob - useful for listing a > particular files across whole directory tree > * Support for reestablishing broken ftp data transfers - can happen > surprisingly often -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org