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Hyukjin Kwon 6041d1c51b [SPARK-36030][SQL][FOLLOW-UP] Avoid procedure syntax deprecated in Scala 2.13 
### What changes were proposed in this pull request?

This PR avoid using procedure syntax deprecated in Scala 2.13.

https://github.com/apache/spark/runs/3120481756?check_suite_focus=true

```
[error] /home/runner/work/spark/spark/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileFormatDataWriterMetricSuite.scala:44:90: procedure syntax is deprecated: instead, add `: Unit =` to explicitly declare `testMetricOnDSv2`'s return type
[error]   private def testMetricOnDSv2(func: String => Unit, checker: Map[Long, String] => Unit) {
[error]                                                                                          ^
[error] /home/runner/work/spark/spark/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/InMemoryTableMetricSuite.scala:44:90: procedure syntax is deprecated: instead, add `: Unit =` to explicitly declare `testMetricOnDSv2`'s return type
[error]   private def testMetricOnDSv2(func: String => Unit, checker: Map[Long, String] => Unit) {
[error]                                                                                          ^
[warn] 100 warnings found
[error] two errors found
[error] (sql / Test / compileIncremental) Compilation failed
[error] Total time: 579 s (09:39), completed Jul 21, 2021 4:14:26 AM
```

### Why are the changes needed?

To make the build compatible with Scala 2.13 in Spark.

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

No, dev-only.

### How was this patch tested?

Manually tested:

```bash
./dev/change-scala-version.sh 2.13
./build/mvn -DskipTests -Phive-2.3 -Phive clean package -Pscala-2.13
```

Closes #33452 from HyukjinKwon/SPARK-36030.

Authored-by: Hyukjin Kwon <gurwls223@apache.org>
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
(cherry picked from commit 99006e515b)
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
2021-07-21 14:09:35 +09:00
..
catalyst [SPARK-36030][SQL] Support DS v2 metrics at writing path 2021-07-20 20:20:48 -07:00
core [SPARK-36030][SQL][FOLLOW-UP] Avoid procedure syntax deprecated in Scala 2.13 2021-07-21 14:09:35 +09:00
hive [SPARK-36201][SQL][FOLLOWUP] Schema check should check inner field too 2021-07-20 21:08:36 +08:00
hive-thriftserver [SPARK-36179][SQL] Support TimestampNTZType in SparkGetColumnsOperation 2021-07-20 09:49:25 +09:00
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-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
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.