Accumulators and Broadcast Variables
Understand the use of accumulators and broadcast variables within Apache Spark's Java API to manage distributed data sharing. Learn to count error rows using accumulators and optimize data distribution with broadcast variables, enabling efficient processing and enhanced performance in big data applications.
We'll cover the following...
We'll cover the following...
Sharing data in a cluster
Sharing data in a distributed environment, regardless of the use case, can be confusing.
Understanding the scope (where the variables “live”) and lifecycle (how the values change) of shared variables while executing code in a cluster presents itself as a challenging task.
Within the Spark ecosystem, variables can be passed down to objects that operate in a distributed fashion. Still, these are ...