Bump. Bharath?
On Tue, Feb 4, 2020, 12:09 Sean Busbey <[email protected]> wrote: > I don't see the current design doc in the feature branch (i.e. > dev-support/design-docs) please include it there. > > the current design doc has comments open still, should I assume those > things haven't been addressed in the branch? or should I assume they > have but it hasn't been updated yet? > > On Tue, Feb 4, 2020 at 10:37 AM Bharath Vissapragada > <[email protected]> wrote: > > > > Hello everyone, > > > > I'd like to kickoff a discuss thread on dev@ to see what folks think > about > > merging the feature branch for HBASE-18095 > > <https://issues.apache.org/jira/browse/HBASE-18095> into the master. For > > those of you who aren't following this work, over the last few months, a > > lot of effort went into a feature branch > > < > https://github.com/apache/hbase/tree/HBASE-18095/client-locate-meta-no-zookeeper > > > > to > > remove the ZK dependency in the client. > > > > *Please refer to the design doc > > < > https://docs.google.com/document/d/1JAJdM7eUxg5b417f0xWS4NztKCx1f2b6wZrudPtiXF4/edit > > > > attached to the parent jira and go through the subtasks for all the > > technical details and design considerations*. > > > > *TL;DR*: With this feature, the client connection implementation *does > not* > > need access to zookeeper to fetch the connection metadata. Instead, a > > predefined set of master end points in the configuration are used by > > clients to fetch the required metadata. > > > > This new feature is *enabled by default on the feature branch* and passes > > the entire nightly test suite (modulo some known flakes not specific to > the > > branch). At this point, I'm not aware of any performance concerns / > feature > > gaps compared to original default implementation. The original registry > > implementation is still retained and can be used by setting the following > > client configuration. This kill switch gives the users more flexibility > > since they have a fallback incase they run into any issues. > > > > <property> > > <!-- Reverts to the original ZK based connection registry > > implementation --> > > <name>hbase.client.registry.impl</name> > > <value>org.apache.hadoop.hbase.client.ZKConnectionRegistry</value> > > </property> > > > > This work is also slated to go into the upcoming releases* 2.3.0* and > > *1.6.0*. However, it will be *disabled by default*. Having this work back > > ported to those branches enables users to try it out in their > environments > > and report any feedback. > > > > Please speak up (respond to this email) if there are any objections to > > merging this work in the master branch. > > > > Many thanks to Nick Dimiduk, Andrew Purtell and Michael Stack for their > > invaluable feedback throughout this work. > > > > - Bharath >
