Thanks for the analysis. Please be careful of the code reuse from other "opensource" repo, especially for the License.
Regards, Jacky On 2019/10/24 06:25:40, Ajantha Bhat <[email protected]> wrote: > Hi Jacky, > > we have checked about geomesa > > [image: Screenshot from 2019-10-23 16-25-23.png] > > a. Geomesa is tightly coupled with key-value pair databases like Accumulo, > HBase, Google Bigtable and Cassandra databases and used for OLTP queries. > b. Geomesa current spark integration is only in query flow, load from spark > is not supported. spark can be used for analytics on geomesa store. > Here they override spark catalyst optimizer code to intercept filter from > logical relation and they push down to geomesa server. > All the query logic like spatial time curve building (z curve, quadtree) > doesn't happen at spark layer. It happens in geoserver layer which is > coupled with key-value pair databases. > https://www.geomesa.org/documentation/user/architecture.html > > https://www.geomesa.org/documentation/user/spark/architecture.html > > https://www.youtube.com/watch?v=Otf2jwdNaUY > > c. Geomesa is for spatio-temporal data , not just a spatial data. > so, we cannot integrate carbon with geo mesa directly, but we can reuse > some of the logic present in it like quadtree formation and look up. > > Also I found *another alternative* "*GeoSpark", *this project is not > coupled with any store. > https://datasystemslab.github.io/GeoSpark/ > > https://www.public.asu.edu/~jiayu2/presentation/jia-icde19-tutorial.pdf > so, we will check further about integrating carbon to GeoSpark or reusing > some of the code from this. > > Also regarding the second point, yes, we can have carbon implementation as > a generic framework where we can plugin the different logic. > > Thanks, > Ajantha > > > > > > On Mon, Oct 21, 2019 at 6:34 PM Indhumathi <[email protected]> wrote: > > > Hi Venu, > > > > I have some questions regarding this feature. > > > > 1. Does geospatial index supports on streaming table?. If so, will there be > > any impact on generating > > geoIndex on steaming data? > > 2. Does it have any restrictions on sort_scope? > > 3. Apart from Point and Polygon queries, will geospatial index also support > > Aggregation queries on > > geographical location data? > > > > Thanks & Regards, > > Indhumathi > > > > > > > > > > -- > > Sent from: > > http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/ > > >
