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All Projects → AndrewKuzmin → spark-structured-streaming-examples

AndrewKuzmin / spark-structured-streaming-examples

Licence: Apache-2.0 License
Spark structured streaming examples with using of version 3.0.0

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sparkapache-sparkstructured-streamingspark-sqlspark-structured-streamingdelta-lake

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Spark Structured Streaming Examples

Spark structured streaming examples with using of version 3.0.0

Support matrix for joins in streaming queries

Left Input Right Input Join Type Example
Static Static All types TBD
Stream Static Inner TBD
Left Outer TBD
Right Outer Not supported
Full Outer Not supported
Static Stream Inner TBD
Left Outer Not supported
Right Outer TBD
Full Outer Not supported
Stream Stream Inner ..streamstream.InnerJoinApp*, ..streamstream.InnerJoinWithWatermarkingApp*
Left Outer ..streamstream.LeftOuterJoinWithWatermarkingApp*
Right Outer TBD
Full Outer Not supported

*Base package: com.phylosoft.spark.learning.sql.streaming.operations.join

Use cases of processing modes (Triggers modes)

  1. Default;
  2. Fixed interval micro-batches;
  3. One-time micro-batch;
  4. Continuous with fixed checkpoint interval;

Optimizations

  1. Tungsten execution engine;
  2. Catalyst query optimizer;
  3. Cost-based optimizer;

Structured Sessionization

  1. KeyValueGroupedDataset.mapGroupsWithState;
  2. KeyValueGroupedDataset.flatMapGroupsWithState;

Links

  1. Structured Streaming Programming Guide;
  2. Stream-Stream Joins using Structured Streaming (Scala);
  3. Easy, Scalable, Fault-Tolerant Stream Processing with Structured Streaming in Apache Spark;
  4. Easy, Scalable, Fault-Tolerant Stream Processing with Structured Streaming in Apache Spark - continues;
  5. Deep Dive into Stateful Stream Processing in Structured Streaming;
  6. Monitoring Structured Streaming Applications Using Web UI;
  7. The Internals of Spark Structured Streaming;
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