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Kousuke Saruta 0b65daad2a [SPARK-36760][DOCS][FOLLOWUP] Fix wrong JavaDoc style 
### What changes were proposed in this pull request?

This PR fixes a JavaDoc style error introduced in SPARK-36760 (#34073).
Due to this error, build on GA fails and the following error message appears.
```
[error]  * internal -> external data conversion.
```

### Why are the changes needed?

To recover GA.

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

No.

### How was this patch tested?

Should be done by GA itself.

Closes #34078 from sarutak/fix-doc-error.

Authored-by: Kousuke Saruta <sarutak@oss.nttdata.com>
Signed-off-by: Kousuke Saruta <sarutak@oss.nttdata.com>
2021-09-24 02:18:53 +09:00
..
catalyst [SPARK-36760][DOCS][FOLLOWUP] Fix wrong JavaDoc style 2021-09-24 02:18:53 +09:00
core [SPARK-36795][SQL] Explain Formatted has Duplicate Node IDs 2021-09-23 15:54:33 +09:00
hive [SPARK-32709][SQL] Support writing Hive bucketed table (Parquet/ORC format with Hive hash) 2021-09-17 14:28:51 +08:00
hive-thriftserver [SPARK-36774][CORE][TESTS] Move SparkSubmitTestUtils to core module and use it in SparkSubmitSuite 2021-09-16 14:28:47 -07:00
create-docs.sh [SPARK-34010][SQL][DODCS] Use python3 instead of python in SQL documentation build 2021-01-05 19:48:10 +09:00
gen-sql-api-docs.py [SPARK-34747][SQL][DOCS] Add virtual operators to the built-in function document 2021-03-19 10:19:26 +09:00
gen-sql-config-docs.py [SPARK-36657][SQL] Update comment in 'gen-sql-config-docs.py' 2021-09-02 18:50:59 -07:00
gen-sql-functions-docs.py
mkdocs.yml
README.md

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.