[HDFS-7793] Refactor DFSOutputStream separating DataStreamer out

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: hdfs-client
• Assignee: Li Bo
• Reporter: Kai Zheng
• Created: 13/Feb/15 03:36
• Updated: 30/Aug/16 01:39
• Resolved: 24/Mar/15 18:43

Description

As proposed by Jing Zhao, Tsz-wo Sze and discussed with Zhe Zhang in HDFS-7729, it would be great to refactor DFSOutputStream first and separate DataStreamer out of it, before we enhance it to support the stripping layout. Uma Maheswara Rao G suggested we have this issue to handle the refactoring. Thanks.

Issue Links

• is depended upon by: HDFS-7729 Add logic to DFSOutputStream to support writing a file in striping layout
• is depended upon by: HDFS-7888 Change DataStreamer/DFSOutputStream/DFSPacket for convenience of subclassing
• is duplicated by: HDFS-7729 Add logic to DFSOutputStream to support writing a file in striping layout

Sub-Tasks

• Separate class DataStreamer out of DFSOutputStream: Resolved
• Separate class Packet from DFSOutputStream: Closed
• DFSOutputStream using outer independent class DataStreamer and Packet: Resolved