SparkSQL Module

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A SparkSQL Module is a Spark module that is a SQL Module.



References

2017

  • https://github.com/apache/spark/tree/branch-2.2/sql
    • QUOTE: This module provides support for executing relational queries expressed in either SQL or the DataFrame/Dataset API.

       Spark SQL is broken up into four subprojects:

      • Catalyst (sql/catalyst) - An implementation-agnostic framework for manipulating trees of relational operators and expressions.
      • Execution (sql/core) - A query planner / execution engine for translating Catalyst's logical query plans into Spark RDDs. This component also includes a new public interface, SQLContext, that allows users to execute SQL or LINQ statements against existing RDDs and Parquet files.
      • Hive Support (sql/hive) - Includes an extension of SQLContext called HiveContext that allows users to write queries using a subset of HiveQL and access data from a Hive Metastore using Hive SerDes. There are also wrappers that allows users to run queries that include Hive UDFs, UDAFs, and UDTFs.
      • HiveServer and CLI support (sql/hive-thriftserver) - Includes support for the SQL CLI (bin/spark-sql) and a HiveServer2 (for JDBC/ODBC) compatible server.

2017

2016

2015

2015b

2013