Hi Andrew, Suresh has posted a new revision of the design doc. Have you got a chance to take a look? Kihwal is also revising the design doc for the datanode sections.
Thanks for voting! Tsz-Wo On Monday, March 3, 2014 10:57 AM, Andrew Wang <andrew.w...@cloudera.com> wrote: Can we get an updated design doc posted to the JIRA? I'm not -1 or >anything, but I asked for this on the JIRA just before the merge vote >started, and would like to see it posted soon. > > > >On Mon, Mar 3, 2014 at 9:59 AM, Arpit Agarwal <aagar...@hortonworks.com>wrote: > >> +1 for merging the feature to trunk. >> >> >> On Tue, Feb 25, 2014 at 1:41 PM, Tsz Wo Sze <szets...@yahoo.com> wrote: >> >> > Hi hdfs-dev, >> > >> > We propose merging the HDFS-5535 branch to trunk. >> > >> > HDFS Rolling Upgrade is a feature to allow upgrading individual HDFS >> > daemons. In Hadoop v2, HDFS supports highly-available (HA) namenode >> > services and wire compatibility. These two capabilities make it feasible >> to >> > upgrade HDFS without incurring HDFS downtime. We make such improvement >> in >> > the HDFS-5535 branch. >> > >> > The HDFS-5535 branch is ready to be merged to trunk. As this being >> > written, there are 48 subtasks in HDFS-5535; 44 subtasks are already >> > completed. The core developments including feature development, unit >> tests >> > and user doc, are already done. The merge patch posted a few ago already >> > passed Jenkins. I will post a updated patch to trigger Jenkins again for >> > the latest code base. >> > >> > The remaining JIRAs are: >> > >> > HDFS-3225: Revist upgrade snapshots, roll back, finalize to enable >> rolling >> > upgrades (assigned to Sanjay) >> > HDFS-6000: Avoid saving namespace when starting rolling upgrade (assigned >> > to Jing) >> > HDFS-6013: add rollingUpgrade information to latest UI (assigned to >> Vinay) >> > HDFS-6016: Update datanode replacement policy to make writes more robust >> > (assigned to Kihwal) >> > >> > HDFS-6000 will be committed soon. All other issues are further >> > improvements which can be done after merge. >> > >> > The other remaining works are: >> > - Revise the design doc >> > - Post a test plan (Haohui is working on it.) >> > - Execute the manual tests (Haohui and Fengdong will work on it.) >> > >> > The work was a collective effort of Nathan Roberts, Sanjay Radia, Suresh >> > Srinivas, Kihwal Lee, Jing Zhao, Arpit Agarwal, Brandon Li, Haohui Mai, >> > Vinayakumar B, Fengdong Yu, Chris Nauroth and Tsz-Wo Nicholas Sze, who >> have >> > proposed the design, worked on the code, reviewed patches, tested the >> > features and authored documentation. We thank everyone that who has gave >> > us valuable comments and feedback on the feature. >> > >> > The vote runs for 7 days. Here is my +1 on the merge. >> > >> > Thanks. >> > Tsz-Wo >> >> -- >> CONFIDENTIALITY NOTICE >> NOTICE: This message is intended for the use of the individual or entity to >> which it is addressed and may contain information that is confidential, >> privileged and exempt from disclosure under applicable law. If the reader >> of this message is not the intended recipient, you are hereby notified that >> any printing, copying, dissemination, distribution, disclosure or >> forwarding of this communication is strictly prohibited. If you have >> received this communication in error, please contact the sender immediately >> and delete it from your system. Thank You. >> > > >
