I am just concerned about the use case of appends in Hadoop. I know that they have provided support for appends in hadoop. But how frequently are the files getting appended? . There is this version concept too that is maintained in the block report, according to my guess this version number is maintained to make sure that if a datanode gets disconnected once and comes back if it has a old copy of the data , then discard read requests to this data node. But if the files are not getting appended frequently does the version number remain the same?. Any typical use case can you guys point to?
~Kartheek On Mon, Oct 17, 2011 at 12:53 PM, Uma Maheswara Rao G 72686 < mahesw...@huawei.com> wrote: > AFAIK, append option is there in 20Append branch. Mainly supports sync. But > there are some issues with that. > > Same has been merged to 20.205 branch and will be released soon (rc2 > available). And also fixed many bugs in this branch. As per our basic > testing it is pretty good as of now.Need to wait for official release. > > Regards, > Uma > > ----- Original Message ----- > From: bourne1900 <bourne1...@yahoo.cn> > Date: Monday, October 17, 2011 12:37 pm > Subject: Does hadoop support append option? > To: common-user <common-user@hadoop.apache.org> > > > I know that hadoop0.19.0 supports append option, but not stable. > > Does the latest version support append option? Is it stable? > > Thanks for help. > > > > > > > > > > bourne >
