Posts about Spark Programming guide
Spark external dataset
May 17, 2021 15:00 0 Comment Spark Programming guide
Spark external dataset, The external dataset, Spark can create distributed datasets from any hadoop-supported storage source, including your local file system, HDFS, Cassandr
Spark parallel collection
May 17, 2021 15:00 0 Comment Spark Programming guide
Spark parallel collection, Spark parallel collection, Parallelized collections are created, by calling SparkContext's parallelize method on an, parallelize, Seq, E, lements in a
Spark RDDs
May 17, 2021 15:00 0 Comment Spark Programming guide
Elastic Distributed Data Sets (RDDs), Elastic Distributed Data Sets (RDDs), Elastic Distributed Data Sets (RDDs), The core concept of, Spark is The LifedAnce Dataset (RDD):, a collection of fault-wearing data that can be opera
Spark RDD persistence
May 17, 2021 15:00 0 Comment Spark Programming guide
Spark RDD persistence, Spark RDD persistence, Spark RDD persistence, One of Spark's most important features is that it can persist (or cache) a collection into memory through various operations. W
The output operation of DStream
May 17, 2021 16:00 0 Comment Spark Programming guide
The output operation on DStreams, The output operation on DStreams, The output operation on DStreams, Output operations allow DStream operations to be pushed into external systems such as databases, file systems, and s
Spark Streaming reduces the execution time of batch data
May 17, 2021 16:00 0 Comment Spark Programming guide
Spark Streaming reduces the execution time of batch data, Spark Streaming reduces the execution time of batch data, Spark Streaming reduces, the execution time of batch data, There are several optimizations in Spark that can reduce batch time. T, hese can, be discus
Spark Streaming performance tuning
May 17, 2021 16:00 0 Comment Spark Programming guide
Spark Streaming performance tuning, Spark Streaming performance tuning, Spark Streaming, performance tuning, The best performance for Spark Streaming applications in the cluster requires some tuning. T, his chapter describ
Spark Streaming monitoring applications
May 17, 2021 16:00 0 Comment Spark Programming guide
Spark Streaming monitors the app, Spark Streaming monitors the app, Spark Streaming monitors, the app, In addition to Spark's monitoring capabilities, Spark Streaming adds some proprietary features. W, hen StreamingCon
Spark Streaming deploys applications
May 17, 2021 16:00 0 Comment Spark Programming guide
Spark Streaming deploys applications, Spark Streaming deploys applications, Spark Streaming, deploys applications, Requirements, There are some steps to running a Spark Streaming application, Clusters with managers - This is a
Spark Streaming Checkpointing
May 17, 2021 16:00 0 Comment Spark Programming guide
Spark Streaming Checkpointing, Spark Streaming Checkpointing, Spark Streaming, Checkpointing, A streaming application must be running around the clock, and all must be able to resolve application logic-independen
DStreams cache or persist
May 17, 2021 16:00 0 Comment Spark Programming guide
Cache or persist, Cache or persist, Cache or persist, Similar to RDD, DStreams also allows developers to persist streaming data into memory. U, sing the, persist(), automatically persist
Conversions in DStream
May 17, 2021 16:00 0 Comment Spark Programming guide
Transformation in DStream, Transformation in DStream, Transformation in DStream, Similar to RDD, transformation allows data from the input DStream to be modified. D, Streams supports many transformation c
Enter DStreams
May 17, 2021 16:00 0 Comment Spark Programming guide
Enter DStreams and receivers, Enter DStreams and receivers, Enter DStreams and receivers, Entering DStreams represents DStreams that get the input data stream from the data source. I, n, the quick example,, lin
Spark Streaming Discrete Stream
May 17, 2021 16:00 0 Comment Spark Programming guide
Discrete Streams (DStreams), Discrete Streams (DStreams), Discrete Streams (DStreams), Discrete streaming or DStreams is the basic abstraction provided by Spark Streaming, which represents a continuous stream
Spark Streaming sets the correct batch capacity
May 17, 2021 17:00 0 Comment Spark Programming guide
Set the correct batch capacity, Set the correct batch capacity, Set the correct batch capacity, In order for the Spark Streaming application to run steadily in the cluster, the system should be able to process the