[HADOOP-8602] Passive mode support for FTPFileSystem

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.0.3, 2.0.0-alpha
• Component/s: fs
• Labels: BB2015-05-TBR
• Target Version/s: 2.8.3
• Assignee: Unassigned
• Reporter: Nemon Lou
• Created: 17/Jul/12 03:06
• Updated: 11/Sep/17 05:38

Description

FTPFileSystem uses active mode for default data connection mode.We shall be able to choose passive mode when active mode doesn't work (firewall for example).
My thoughts is to add an option "fs.ftp.data.connection.mode" in core-site.xml.Since FTPClient(in org.apache.commons.net.ftp package) already supports passive mode, we just need to add a few code in FTPFileSystem .connect() method.