[HDFS-8852] HDFS architecture documentation of version 2.x is outdated about append write support

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 2.7.2, 3.0.0-alpha1
• Component/s: documentation
• Labels: newbie
• Hadoop Flags: Reviewed
• Assignee: Ajith S
• Reporter: Hong Dai Thanh
• Created: 04/Aug/15 05:29
• Updated: 02/Dec/16 00:34
• Resolved: 18/Aug/15 14:37

Description

In the latest version of the documentation, and also documentation for all releases with version 2, it’s mentioned that “A file once created, written, and closed need not be changed. “ and “There is a plan to support appending-writes to files in the future.”

However, as far as I know, HDFS has supported append write since 0.21, based on HDFS-265 and the old version of the documentation in 2012

Various posts on the Internet also suggests that append write has been available in HDFS, and will always be available in Hadoop version 2 branch.

Can we update the documentation to reflect the current status?

(Please also review whether the documentation should also be updated for version 0.21 and above, and the version 1.x branch)

Issue Links

• is related to: HDFS-9505 HDFS Architecture documentation needs to be refreshed.