Hi Sreehari, I actually also see this problem. It would be good to fix it. You can simply create a jira describing the issue and we can discuss there how to fix it. If you have a patch - even better. Once fixed in trunk it can be ported to other branches, including 0.22 or HDFS-1073-branch if desired.
Thanks, --Konstantin On Wed, May 25, 2011 at 10:45 AM, Todd Lipcon <t...@cloudera.com> wrote: > Hi Sreehari, > > The BackupNode isn't really production-ized. I don't think anyone uses it, > so it's not surprising that there are a lot of broken parts. > > If you're interested in contributing in this area, I would encourage you to > look at the HDFS-1073 branch. The BN and CheckpointNode will be undergoing > various surgery during the course of this project, so it's a good > opportunity to fix it up, add test coverage, etc. > > -Todd > > On Wed, May 25, 2011 at 1:08 AM, Sreehari G <sreehar...@huawei.com> wrote: > > > Hi all , > > > > In HDFS-903 - ( md5 verification of fsimage ) , with this change , > > Backupnode is downloading the image & edit files from namenode everytime > > since the difference in checkpoint time is always maintined b/w Namenode > and > > Backupnode . This happens since Namenode is resetting its checkpoint time > > everytime since we are ignoring renewCheckpointTime and passing true > > explicitly to rollFsimage during endcheckpoint .. > > > > Also , though a proposal for using md5 to decide whether to download > image > > is also mentioned , it doesnt seeem to be implemented .. > > > > Isn't this downloading of image everytime a problem or am I missing > > something ? > > > > HUAWEI TECHNOLOGIES CO.,LTD. [image: huawei_logo] > > > > > > Solitaire > > Domlur > > Bangalore > > www.huawei.com > > > > > ------------------------------------------------------------------------------------------------------------------------------------- > > This e-mail and its attachments contain confidential information from > > HUAWEI, which > > is intended only for the person or entity whose address is listed above. > > Any use of the > > information contained herein in any way (including, but not limited to, > > total or partial > > disclosure, reproduction, or dissemination) by persons other than the > > intended > > recipient(s) is prohibited. If you receive this e-mail in error, please > > notify the sender by > > phone or email immediately and delete it! > > > > > > > > -- > Todd Lipcon > Software Engineer, Cloudera >
