hi:
Is this sensor data, hence timestamp? Ho w are you generating this 'key'
field?Can you have only the 'key' field as primary key? Even if not, since
that field is a part of the PK may make such queries fast.
However, are there other attributes thst can be added that define unique
business key
Not sure what is meant.. Spark can access HDFS. Why is it in standalone
mode? Please clarify.
On Tue, May 10, 2016 at 11:08 AM, Srini Sydney
wrote:
> I have a clarification based on your answer -
>
> spark is installed as standalone mode (not hdfs) in SMACK framework. Our
> data lake is in hdfs
