Hi, 2010/12/11 Petrucci Andreas <[email protected]>: > > Hi there, well i have a certain question that seeks answer. The HDFS's append > operation was not officially included in hadoop 0.20.* however it is said > that it is supported offcially in the 0.21.0 release. Could anyone could tell > me if there are now performance imporvemets or no consistency/reliability > issues in the 0.21.0 release? are any benchmarks offiaclly included in the > 0.21.0 release?
For append with 0.20 releases, there is a 0.20-append branch available. This JIRA page should throw good light on the Append-feature redo that was carried out: https://issues.apache.org/jira/browse/HDFS-265 And as always, all tickets related to the current latest release may be found here: http://hadoop.apache.org/hdfs/docs/current/releasenotes.html [Does have a log of append work included -- part of Improvements carried out, and append tests were also added to the existing benchmark tests if I'm right] -- Harsh J www.harshj.com
