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| author | Cheng Lian <lian@databricks.com> | 2015-11-17 11:17:52 -0800 |
|---|---|---|
| committer | Michael Armbrust <michael@databricks.com> | 2015-11-17 11:17:52 -0800 |
| commit | 7b1407c7b95c43299a30e891748824c4bc47e43b (patch) | |
| tree | 5fbeef381ca979fc7a4ce3deec9f5c69d6d6c2cc /docs/sql-programming-guide.md | |
| parent | e8833dd12c71b23a242727e86684d2d868ff84b3 (diff) | |
| download | spark-7b1407c7b95c43299a30e891748824c4bc47e43b.tar.gz spark-7b1407c7b95c43299a30e891748824c4bc47e43b.tar.bz2 spark-7b1407c7b95c43299a30e891748824c4bc47e43b.zip | |
[SPARK-11089][SQL] Adds option for disabling multi-session in Thrift server
This PR adds a new option `spark.sql.hive.thriftServer.singleSession` for disabling multi-session support in the Thrift server.
Note that this option is added as a Spark configuration (retrieved from `SparkConf`) rather than Spark SQL configuration (retrieved from `SQLConf`). This is because all SQL configurations are session-ized. Since multi-session support is by default on, no JDBC connection can modify global configurations like the newly added one.
Author: Cheng Lian <lian@databricks.com>
Closes #9740 from liancheng/spark-11089.single-session-option.
Diffstat (limited to 'docs/sql-programming-guide.md')
| -rw-r--r-- | docs/sql-programming-guide.md | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/sql-programming-guide.md b/docs/sql-programming-guide.md index 6e02d6564b..e347754055 100644 --- a/docs/sql-programming-guide.md +++ b/docs/sql-programming-guide.md @@ -2051,6 +2051,20 @@ options. # Migration Guide +## Upgrading From Spark SQL 1.5 to 1.6 + + - From Spark 1.6, by default the Thrift server runs in multi-session mode. Which means each JDBC/ODBC + connection owns a copy of their own SQL configuration and temporary function registry. Cached + tables are still shared though. If you prefer to run the Thrift server in the old single-session + mode, please set option `spark.sql.hive.thriftServer.singleSession` to `true`. You may either add + this option to `spark-defaults.conf`, or pass it to `start-thriftserver.sh` via `--conf`: + + {% highlight bash %} + ./sbin/start-thriftserver.sh \ + --conf spark.sql.hive.thriftServer.singleSession=true \ + ... + {% endhighlight %} + ## Upgrading From Spark SQL 1.4 to 1.5 - Optimized execution using manually managed memory (Tungsten) is now enabled by default, along with |