hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hong Dai Thanh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8852) Documentation of Hadoop 2.x is outdated about append write support
Date Tue, 04 Aug 2015 05:29:05 GMT
Hong Dai Thanh created HDFS-8852:

             Summary: Documentation of Hadoop 2.x is outdated about append write support
                 Key: HDFS-8852
                 URL: https://issues.apache.org/jira/browse/HDFS-8852
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: documentation
            Reporter: Hong Dai Thanh

In the [latest version of the documentation|http://hadoop.apache.org/docs/current2/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html#Simple_Coherency_Model],
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|https://issues.apache.org/jira/browse/HDFS-265]
and [the old version of the documentation in 2012|https://web.archive.org/web/20121221171824/http://hadoop.apache.org/docs/hdfs/current/hdfs_design.html#Appending-Writes+and+File+Syncs]

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)

This message was sent by Atlassian JIRA

View raw message