Spark - Action

Spark Pipeline


Spark Engine - Action Function in RDD.


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Card Puncher Data Processing
PySpark - Closure

Spark automatically creates closures: for functions that run on RDDs at workers, and for any global variables that are used by those workers. One closure is send per worker for every task. closures...
Card Puncher Data Processing

Map reduce and streaming framework in memory. See: . The library entry point of which is also a connection object is called a session (known also as context). Component: DAG scheduler, ...
Spark Pipeline
Spark - (Reduce|Aggregate) function

Spark permits to reduce a data set through: a reduce function or The reduce function of the map reduce framework Reduce is a spark action that aggregates a data set (RDD) element using a function....
Spark Pipeline
Spark - (Take|TakeOrdered)

The action returns an array of the first n elements (not ordered) whereas returns an array with the first n elements after a sort It's a Top N function Python: Takeordered is an action that...
Spark Pipeline
Spark - Collect

The collect action returns the elements of a map. driver program The collect() action returns all of the elements of the RDD as an array (collection ?). collectAsMap()...
Spark Pipeline
Spark - Count

Count is an action
Spark Pipeline
Spark - Resilient Distributed Datasets (RDDs)

Resilient distributed datasets are one of the data structure in Spark. Write programs in terms of operations on distributed datasets Partitioned collections of objects spread across a cluster, stored...
Spark Query Plan Generation
Spark Engine - Transformation Function

Transformations are functions that will not be completed at the time you write and execute the code. They will only get executed once an action function is called. Spark transformations create new data...

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