Pro Spark Streaming by Zubair Nabi

Author:Zubair Nabi
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Static connection

A single connection per JVM is maintained.

The connection is established regardless of whether it is used.

Lazy static connection

A connection is established only the first time the client object is used.

Thread-safety leads to resource contention turning the connection into a bottleneck.

Static connection pool

A pool of static connections is used throughout.

Now that you have had a deep dive into foreachRDD operations, the next section looks at emitting data to two popular NoSQL stores: HBase and Cassandra.

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