[
https://issues.apache.org/jira/browse/HADOOP-14444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lukas Waldmann updated HADOOP-14444:
------------------------------------
Status: Patch Available (was: In Progress)
What's in the new patch:
1) Refactoring to hadoop-tools
2) Some changes based on Steve comments (String.format is not everywhere
changed to slf4j format everywhere because the same string is used in exception
handling
3) Tests based on ftp/sftp contract - for cached and non cached variants
4) Separation of unit tests and integration tests
5) contract parameters fs.contract.use.internal.ftpserver and
fs.contract.use.internal.sftpserver specifies if local test servers should be
launched while testing
> 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-14444.2.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 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
