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Armin 7c92351f43 [MINOR][CORE] Cleanup dead code and duplication in Mem. Management 
## What changes were proposed in this pull request?

* Removed the method `org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter#alignToWords`.
It became unused as a result of 85b0a15754
(SPARK-15962) introducing word alignment for unsafe arrays.
* Cleaned up duplicate code in memory management and unsafe sorters
  * The change extracting the exception paths is more than just cosmetics since it def. reduces the size the affected methods compile to

## How was this patch tested?

* Build still passes after removing the method, grepping the codebase for `alignToWords` shows no reference to it anywhere either.
* Dried up code is covered by existing tests.

Author: Armin <me@obrown.io>

Closes #19254 from original-brownbear/cleanup-mem-consumer.
2017-09-19 10:06:32 +01:00
..
catalyst [MINOR][CORE] Cleanup dead code and duplication in Mem. Management 2017-09-19 10:06:32 +01:00
core [SPARK-14878][SQL] Trim characters string function support 2017-09-18 12:12:35 -07:00
hive [SPARK-22047][FLAKY TEST] HiveExternalCatalogVersionsSuite 2017-09-19 11:53:50 +08:00
hive-thriftserver [SPARK-18061][THRIFTSERVER] Add spnego auth support for ThriftServer thrift/http protocol 2017-09-06 09:39:39 +08:00
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-21485][FOLLOWUP][SQL][DOCS] Describes examples and arguments separately, and note/since in SQL built-in function documentation 2017-08-05 10:10:56 -07:00
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-21485][SQL][DOCS] Spark SQL documentation generation for built-in functions 2017-07-26 09:38:51 -07:00

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 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.

Running sql/create-docs.sh generates SQL documentation for built-in functions under sql/site.