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maryannxue 9b602e26d2 [SPARK-31046][SQL] Make more efficient and clean up AQE update UI code 
### What changes were proposed in this pull request?
This PR avoids sending redundant metrics (those that have been included in previous update) as well as useless metrics (those in future stages) to Spark UI in AQE UI metrics update.

### Why are the changes needed?
This change will make UI metrics update more efficient.

### Does this PR introduce any user-facing change?
No.

### How was this patch tested?
Manual test in Spark UI.

Closes #27799 from maryannxue/aqe-ui-cleanup.

Authored-by: maryannxue <maryannxue@apache.org>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2020-03-05 18:53:01 +08:00
..
catalyst [SPARK-31024][SQL] Allow specifying session catalog name spark_catalog in qualified column names for v1 tables 2020-03-05 18:33:59 +08:00
core [SPARK-31046][SQL] Make more efficient and clean up AQE update UI code 2020-03-05 18:53:01 +08:00
hive [SPARK-31024][SQL] Allow specifying session catalog name spark_catalog in qualified column names for v1 tables 2020-03-05 18:33:59 +08:00
hive-thriftserver [SPARK-30049][SQL] SQL fails to parse when comment contains an unmatched quote character 2020-03-03 09:55:15 -06:00
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-30840][CORE][SQL] Add version property for ConfigEntry and ConfigBuilder 2020-02-22 09:46:42 +09:00
mkdocs.yml [SPARK-30731] Update deprecated Mkdocs option 2020-02-19 17:28:58 +09:00
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.