#mapr-DB Spark Connector with Secondary Indexes
▻https://hackernoon.com/mapr-db-spark-connector-with-secondary-indexes-df41909f28ea?source=rss--
MapR Data Platform offers significant advantages over any other tool on the big data space. MapR-DB is one of the core components of the platform and it offers state of the art capabilities that blow away most of the NoSQL databases out there.An important add-on to MapR-DB is the ability to use, for writing and querying, Apache Spark through the Connector for Apache Spark. Using this connector comes very handy since it can read and write from spark to MapR-DB using the different Spark APIs such as RDDs, DataFrames, and Streams.Using the connector we can issue queries like the following one.▻https://medium.com/media/eaf9aff1c6b796823d99a0b32e11c030/hrefThe resulting type is a Dataframethat we can use as any other Dataframe from any other source, as we normally do in Spark.If we then filter (...)