[IO-329] FileUtils.writeLines uses unbuffered IO

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3
• Fix Version/s: 2.4
• Component/s: Streams/Writers
• Assignee: Unassigned
• Reporter: Vitalii Tymchyshyn
• Created: 28/May/12 12:11
• Updated: 08/Nov/16 17:57
• Resolved: 28/May/12 13:43

Description

FileUtils.writeLines looks like next:

out = openOutputStream(file, append);
IOUtils.writeLines(lines, lineEnding, out, encoding);

openOutputStream opens plain FileOutputStream without any buffering and IOUtils.writeLines does not add abyt buffering. This means each line require 2 write syscalls (one for the line and one for line separator). This makes call very slow, especially for short lines