[NET-519] Apache Commons Net 3.3 has a performance issue

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2, 3.3
• Fix Version/s: 3.4
• Component/s: FTP

Environment

Windows 7

• Assignee: Unassigned
• Reporter: Bambi Edgar Mota
• Created: 22/Nov/13 00:58
• Updated: 26/Nov/15 16:34
• Resolved: 06/Dec/13 22:21

Description

We use Apache Commons Net FTP 3.1. That version had a bug for transferring files with size 0 that was resolved in Apache Commons 3.2.
Apache Commons 3.2 and 3.3 however both have a performance problem for files that do not have a size of 0.

For example a 30MB file using 3.1 takes approximately 40 seconds on our system from point A to point B.
Using Apache 3.3, the same file takes 2 minutes and 5 seconds.
Using Apache 3.2, the same file took over 4 minutes.
This is not acceptable.

If there are any workarounds, we would like to know. If not this is a major bug.

Issue Links

• is duplicated by: NET-550 Default FTPClient bufferSize results in very slow retrieve transfers
• is related to: NET-465 FTPClient setSendBufferSize and setReceiveBufferSize on data socket