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Jungtaek Lim (HeartSaVioR) ac6406e757 [SPARK-31831][SQL] HiveSessionImplSuite flakiness fix via mocking instances earlier than initializing HiveSessionImpl 
### What changes were proposed in this pull request?

This patch changes the HiveSessionImplSuite to mock instances "before" initializing HiveSessionImpl, to avoid possible classloader issue.

### Why are the changes needed?

The failures of HiveSessionImplSuite always come from classloader issue. While I don't have clear idea what is happening, there's no part possibly dealing with classloader, except initializing HiveSessionImpl. We can move the mock initializations earlier than initialing HiveSessionImpl so that it can avoid possible classloader issue.

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

No.

### How was this patch tested?

Verified with multiple triggers of Jenkins builds

Closes #29039 from HeartSaVioR/hive-session-impl-suite-flakiness-fix.

Authored-by: Jungtaek Lim (HeartSaVioR) <kabhwan.opensource@gmail.com>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
2020-07-09 14:32:20 -07:00
..
catalyst [SPARK-32159][SQL] Fix integration between Aggregator[Array[_], _, _] and UnresolvedMapObjects 2020-07-09 08:42:20 +00:00
core [SPARK-32159][SQL] Fix integration between Aggregator[Array[_], _, _] and UnresolvedMapObjects 2020-07-09 08:42:20 +00:00
hive [SPARK-32192][SQL] Print column name when throws ClassCastException 2020-07-09 09:33:54 -05:00
hive-thriftserver [SPARK-31831][SQL] HiveSessionImplSuite flakiness fix via mocking instances earlier than initializing HiveSessionImpl 2020-07-09 14:32:20 -07:00
create-docs.sh [SPARK-31550][SQL][DOCS] Set nondeterministic configurations with general meanings in sql configuration doc 2020-04-27 17:08:52 +09:00
gen-sql-api-docs.py [SPARK-31474][SQL][FOLLOWUP] Replace _FUNC_ placeholder with functionname in the note field of expression info 2020-04-23 13:33:04 +09:00
gen-sql-config-docs.py [SPARK-31550][SQL][DOCS] Set nondeterministic configurations with general meanings in sql configuration doc 2020-04-27 17:08:52 +09:00
gen-sql-functions-docs.py [SPARK-31562][SQL] Update ExpressionDescription for substring, current_date, and current_timestamp 2020-04-26 11:46:52 -07:00
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.