[HADOOP-16306] AliyunOSS: Remove temporary files when upload small files to OSS

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.10.0, 3.2.0, 2.9.2, 3.0.3, 3.3.0, 3.1.2
• Fix Version/s: 2.10.0, 3.0.4, 3.3.0, 3.2.1, 2.9.3, 3.1.3
• Component/s: fs/oss
• Hadoop Flags: Reviewed
• Assignee: wujinhu
• Reporter: wujinhu
• Created: 10/May/19 10:29
• Updated: 15/May/19 01:29
• Resolved: 14/May/19 21:06

Description

Currently,  AliyunOSSBlockOutputStream will upload files to OSS directly instead of multi part upload if their size are less than configured part size(fs.oss.multipart.upload.size).

When caller closes AliyunOSSBlockOutputStream, it will call  removePartFiles(), however, this method will only remove multi part temporary files, so this patch will fix case above.