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Davies Liu f327e16863 [SPARK-17738] [SQL] fix ARRAY/MAP in columnar cache 
## What changes were proposed in this pull request?

The actualSize() of array and map is different from the actual size, the header is Int, rather than Long.

## How was this patch tested?

The flaky test should be fixed.

Author: Davies Liu <davies@databricks.com>

Closes #15305 from davies/fix_MAP.
2016-09-30 09:59:12 -07:00
..
catalyst [SPARK-17612][SQL] Support DESCRIBE table PARTITION SQL syntax 2016-09-29 15:30:18 -07:00
core [SPARK-17738] [SQL] fix ARRAY/MAP in columnar cache 2016-09-30 09:59:12 -07:00
hive [SPARK-17612][SQL] Support DESCRIBE table PARTITION SQL syntax 2016-09-29 15:30:18 -07:00
hive-thriftserver [SPARK-17190][SQL] Removal of HiveSharedState 2016-08-25 12:50:03 +08:00
README.md [SPARK-16557][SQL] Remove stale doc in sql/README.md 2016-07-14 19:24:42 -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.