Based on what i have tried, after a sync you need to open a new Reader. Please correct if that's not the write semantics.
Thanks, - Inder On Mon, Apr 9, 2012 at 4:23 PM, Harsh J <ha...@cloudera.com> wrote: > I'd also like to note that there are some unresolved issues with the > append version in the 1.x (stable) line. > > Note that HBase's use of the 0.20-append branch features are limited > to using "sync" calls alone (Described in p68 "Coherency Model", > Chapter 3 (The Hadoop Distributed File System) in Hadoop: The > Definitive Guide, 2nd Edition (O'Reilly)). Not the file-reopening > "append" calls. The latter is what is still with issues in the 1.x > releases today. Using the former is alright if its done in the way > similar to HBase's WAL (HLog) (or for similar needs). > > On Mon, Apr 9, 2012 at 3:45 PM, Ioan Eugen Stan <stan.ieu...@gmail.com> > wrote: > > 2012/4/7 Florin P <florinp...@yahoo.com>: > >> Hello! > >> Just google it for supporting of append into HDFS files and the > result: > >> I'm puzzled. Can someone say: YES you can append in TextFile or > SequenceFile > >> or whatever format. If yes, in which version this feature is supported ? > >> Also where can I find a good example of using the API? I know that is a > long > >> debate about this subject, but really it is challenge to find on the > google > >> the current status of this feature. > >> I look forward for a trust source answer. > >> Thank you, > >> Regards, > >> Florin > > > > Hi Florian, > > > > HDFS supports append in Hadoop 1.0.x branch and also 0.22 (a.k.a > > hadoop 2.x branch) and 0.23 (a.k.a hadoop 3.x branch). > > > > [1] http://hbase.apache.org/book/hadoop.html > > [2] http://hbase.apache.org/book/hadoop.html -- search for append in > > release notes > > > > Cheers, > > -- > > Ioan Eugen Stan > > http://ieugen.blogspot.com/ > > > > -- > Harsh J > -- Thanks, - Inder Tech Platforms @Inmobi Linkedin - http://goo.gl/eR4Ub
