+1! Jonathan Hung
On Sat, Dec 15, 2018 at 8:26 AM Zhe Zhang <z...@apache.org> wrote: > +1 > > Thanks for addressing concerns from the previous vote. > > On Fri, Dec 14, 2018 at 6:24 PM Konstantin Shvachko <shv.had...@gmail.com> > wrote: > > > Hi Hadoop developers, > > > > I would like to propose to merge to trunk the feature branch HDFS-12943 > for > > Consistent Reads from Standby Node. The feature is intended to scale read > > RPC workloads. On large clusters reads comprise 95% of all RPCs to the > > NameNode. We should be able to accommodate higher overall RPC workloads > (up > > to 4x by some estimates) by adding multiple ObserverNodes. > > > > The main functionality has been implemented see sub-tasks of HDFS-12943. > > We followed up with the test plan. Testing was done on two independent > > clusters (see HDFS-14058 and HDFS-14059) with security enabled. > > We ran standard HDFS commands, MR jobs, admin commands including manual > > failover. > > We know of one cluster running this feature in production. > > > > Since the previous vote we addressed Daryn's concern (see HDFS-13873), > > added documentation for the new feature, and fixed a few other jiras. > > > > I attached a unified patch to the umbrella jira for the review. > > Please vote on this thread. The vote will run for 7 days until Wed Dec > 21. > > > > Thanks, > > --Konstantin > > > -- > Zhe Zhang > Apache Hadoop Committer > http://zhe-thoughts.github.io/about/ | @oldcap >
