Good idea, it is here on the wiki: https://cwiki.apache.org/confluence/display/HAWQ/About+HAWQ
On Wed, Oct 28, 2015 at 6:03 PM, Greg Chase <[email protected]> wrote: > This might be some food information to add to HAWQ's WIKI if someone wants > some contribution karma. > > This email encrypted by tiny buttons & fat thumbs, beta voice recognition, > and autocorrect on my iPhone. > > On Oct 28, 2015, at 2:26 AM, Lei Chang <[email protected]> wrote: > > > hawq catalog is on master and it uses local file system. > > For hawq, catalog only sits on master. GPDB is different. catalog is on > all the nodes. > > you can reference paper here for more details: > > Lei Chang et al: HAWQ: a massively parallel processing SQL engine in > hadoop > <https://github.com/changleicn/publications/raw/master/hawq-sigmod-2014.pdf>. > SIGMOD Conference 2014: 1223-1234 > > > > On Wed, Oct 28, 2015 at 5:08 PM, sequoiadb < > [email protected]> wrote: > >> where is hawq's catalog >> Is it using master’s local file system or if it’s on hdfs? >> I’m not very familiar with GPDB or HAWQ, each segment has its own catalog >> ( including local tables, indexes, stored procedures, etc… ) or all sitting >> at master node? Is there any detailed architecture document I can read? >> Thx >> > >
