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Marco Gaido 78748b5752 [SPARK-27625][SQL] ScalaReflection support for annotated types 
## What changes were proposed in this pull request?

If a type is annotated, `ScalaReflection` can fail if the datatype is an `Option`, a `Seq`, a `Map` and other similar types. This is because it assumes we are dealing with `TypeRef`, while types with annotations are `AnnotatedType`.

The PR deals with the case the annotation is present.

## How was this patch tested?

added UT

Closes #24564 from mgaido91/SPARK-27625.

Authored-by: Marco Gaido <marcogaido91@gmail.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2019-05-10 22:48:36 +08:00
..
catalyst [SPARK-27625][SQL] ScalaReflection support for annotated types 2019-05-10 22:48:36 +08:00
core [SPARK-27627][SQL] Make option "pathGlobFilter" as a general option for all file sources 2019-05-09 08:41:43 +09:00
hive [SPARK-27563][FOLLOWUP] Fix to download new release from dist.apache.org 2019-05-09 08:45:52 -05:00
hive-thriftserver [SPARK-27639][SQL] InMemoryTableScan shows the table name on UI if possible 2019-05-07 21:00:13 -07:00
create-docs.sh [MINOR][DOCS] Minor doc fixes related with doc build and uses script dir in SQL doc gen script 2017-08-26 13:56:24 +09:00
gen-sql-markdown.py [SPARK-27328][SQL] Add 'deprecated' in ExpressionDescription for extended usage and SQL doc 2019-04-09 13:49:42 +08:00
mkdocs.yml [SPARK-21485][SQL][DOCS] Spark SQL documentation generation for built-in functions 2017-07-26 09:38:51 -07:00
README.md [MINOR][DOC] Fix some typos and grammar issues 2018-04-06 13:37:08 +08:00

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 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 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.