ODIn/spark-instrumented-optimizer
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity
spark-instrumented-optimizer/sql
History
yi.wu a1d536cb3e [SPARK-15616][FOLLOW-UP][SQL] Sub Optimizer should include super.postHocOptimizationBatches 
### What changes were proposed in this pull request?

Let sub optimizer's  `postHocOptimizationBatches` also includes super's `postHocOptimizationBatches`.

### Why are the changes needed?

It's necessary according to the design of catalyst optimizer.

### Does this PR introduce any user-facing change?

No.

### How was this patch tested?

Pass jenkins.

Closes #27607 from Ngone51/spark_15616_followup.

Authored-by: yi.wu <yi.wu@databricks.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2020-02-18 01:52:23 +08:00
..
catalyst [SPARK-30829][SQL] Define LegacyBehaviorPolicy enumeration as the common value for result change configs 2020-02-18 00:52:05 +08:00
core [SPARK-11150][SQL][FOLLOWUP] Move sql/dynamicpruning to sql/execution/dynamicpruning 2020-02-18 01:44:14 +08:00
hive [SPARK-15616][FOLLOW-UP][SQL] Sub Optimizer should include super.postHocOptimizationBatches 2020-02-18 01:52:23 +08:00
hive-thriftserver [SPARK-30798][SQL] Scope Session.active in QueryExecution 2020-02-13 23:58:55 +01:00
create-docs.sh [SPARK-30510][SQL][DOCS] Publicly document Spark SQL configuration options 2020-02-09 19:20:47 +09:00
gen-sql-api-docs.py [SPARK-30510][SQL][DOCS] Publicly document Spark SQL configuration options 2020-02-09 19:20:47 +09:00
gen-sql-config-docs.py [SPARK-30510][SQL][DOCS] Publicly document Spark SQL configuration options 2020-02-09 19:20:47 +09:00
mkdocs.yml [SPARK-21485][SQL][DOCS] Spark SQL documentation generation for built-in functions 2017-07-26 09:38:51 -07:00
README.md [SPARK-30510][SQL][DOCS] Publicly document Spark SQL configuration options 2020-02-09 19:20:47 +09:00

README.md

Spark SQL

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 extensions that allow users to write queries using a subset of HiveQL and access data from a Hive Metastore using Hive SerDes. There are also wrappers that allow 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.

Running ./sql/create-docs.sh generates SQL documentation for built-in functions under sql/site, and SQL configuration documentation that gets included as part of configuration.md in the main docs directory.