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. > 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 >
