Hello,
I don't think that it is currently possible to do that. Spark sql
doesn't natively support list or map types. GeoMesa (not through
spark) can query on list types, but due to our use of GeoTools CQL
there isn't currently a way to query on map types. So it would be
somewhat complicated to implement.
It may be more feasible to store your map as a json object string.
Spark sql has functions for parsing and filtering json, so you could
do something like:
select get_json_object(properties, '$.k1') from test_road_value
where get_json_object(properties, '$.k2') = 'vvv'
Note that this would not be an optimized query, and would have to
load your entire dataset from GeoMesa and then do the filtering in
spark.
In your GeoMesa schema, you could just use a plain string or make it
a json object. Making it a json object wouldn't affect spark sql,
but may be useful if you are not using spark:
https://www.geomesa.org/documentation/user/geojson.html#json-attributes
Thanks,
Emilio
On 1/11/19 2:40 AM, 段卫东 wrote:
You must subscribe to this list before posting. Please go to
https://locationtech.org/mailman/listinfo
to subscribe to the list,
then try again. Perhaps you are already subscribed using
another
email address; if that is the case, please send email to this
list
using the email address you've used to subscribe.
---------- Forwarded message ----------
From: "段卫东" <
misslzyan108@xxxxxxxxx>
To:
geomesa-dev@xxxxxxxxxxxxxxxx
Cc:
Bcc:
Date: Fri, 11 Jan 2019 15:32:21 +0800
Subject: Hbase spark-sql for filter `Map` `List`
hi ,all,
I want to use spark-sql to filter with `Map`
`List` data type .
like this :
select properties['k1']
from test_road_value where
properties['k2']='vvv'
Did anyone going to do this ? and/or have the
same request ?
_______________________________________________
geomesa-dev mailing list
geomesa-dev@xxxxxxxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe from this list, visit
https://dev.locationtech.org/mailman/listinfo/geomesa-dev
