Thank you, very helpful. On Oct 5, 2015 8:04 AM, "Caleb Welton" <[email protected]> wrote:
> Replying to [email protected], moving dev list to bcc. > > Feng, > > In GPHOME there is a file Edit $GPHOME/etc/slaves. This file should have > all segment host names, for example: sdw1 sdw2 sdw3. Once populated if > your run `hawq init cluster` it will install hawq segments on each of these > nodes. > > You can also add additional segments after initial cluster initialization > via `hawq init segment`. This operation can be done online and the segment > will register itself with the master automatically. > > It is recommended that after adding initializing a new segment that you > also add this segment to the $GPHOME/etc/slaves file so that the segment > will automatically be started again on if you `hawq stop cluster`/`hawq > start cluster`. > > Lei & the dev team, > > The HAWQ 2.0 quickstart documentation has been publicly posted yet... we > should probably fix that so that there are clear instructions for new users > trying out the project for the first time. > > Regards, > Caleb > > On Sun, Oct 4, 2015 at 7:48 AM, Feng Tian <[email protected]> wrote: > > > sorry, so, one seg per node. does the node get defined in > > hawq-site.xml? just add nodes there? > > On Oct 3, 2015 10:46 PM, "Feng Tian" <[email protected]> wrote: > > > > > interesting. what if i have two physical nodes? > > > > > > and, how can i control the number of forked processes? do i have to > > > believe planner will pickup the right number? any pointer to design > > > and/or implementation? > > > > > > thanks, > > > On Oct 3, 2015 8:02 PM, "Zhanwei Wang" <[email protected]> wrote: > > > > > >> Hi Feng > > >> > > >> Unlike Greenplum Database and HAWQ 1.x. Apache HAWQ will init only one > > >> segment on each node. > > >> > > >> But Apache HAWQ can fork many work processes on one segment to execute > > the > > >> plan. The number of work processes depends on the query and plan. > > >> > > >> Best Regards > > >> Zhanwei Wang > > >> > > >> > > >> On Sun, Oct 4, 2015 at 12:39 AM, Feng Tian <[email protected]> > > wrote: > > >> > > >> > Hi, > > >> > > > >> > Hawq init cluster on my box works great, but it only creates one > > >> segment. > > >> > How can I init a cluster of say, two segments? Which config file > > >> should I > > >> > edit? > > >> > > > >> > Tried gpinitsystem (does not work), tried google but cannot find > much > > >> info. > > >> > > > >> > Thanks, > > >> > > > >> > > >> > > >> > > >> -- > > >> Best Regards > > >> ---------- > > >> > > >> Zhanwei Wang > > >> > > > > > >
