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| author | Davies Liu <davies@databricks.com> | 2015-08-06 17:30:31 -0700 |
|---|---|---|
| committer | Davies Liu <davies.liu@gmail.com> | 2015-08-06 17:30:31 -0700 |
| commit | 4e70e8256ce2f45b438642372329eac7b1e9e8cf (patch) | |
| tree | a78c8f1abac2a574f37589612845845fa1bcaf74 /docs/sql-programming-guide.md | |
| parent | baf4587a569b49e39020c04c2785041bdd00789b (diff) | |
| download | spark-4e70e8256ce2f45b438642372329eac7b1e9e8cf.tar.gz spark-4e70e8256ce2f45b438642372329eac7b1e9e8cf.tar.bz2 spark-4e70e8256ce2f45b438642372329eac7b1e9e8cf.zip | |
[SPARK-9228] [SQL] use tungsten.enabled in public for both of codegen/unsafe
spark.sql.tungsten.enabled will be the default value for both codegen and unsafe, they are kept internally for debug/testing.
cc marmbrus rxin
Author: Davies Liu <davies@databricks.com>
Closes #7998 from davies/tungsten and squashes the following commits:
c1c16da [Davies Liu] update doc
1a47be1 [Davies Liu] use tungsten.enabled for both of codegen/unsafe
Diffstat (limited to 'docs/sql-programming-guide.md')
| -rw-r--r-- | docs/sql-programming-guide.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/docs/sql-programming-guide.md b/docs/sql-programming-guide.md index 3ea77e8242..6c317175d3 100644 --- a/docs/sql-programming-guide.md +++ b/docs/sql-programming-guide.md @@ -1884,11 +1884,11 @@ that these options will be deprecated in future release as more optimizations ar </td> </tr> <tr> - <td><code>spark.sql.codegen</code></td> + <td><code>spark.sql.tungsten.enabled</code></td> <td>true</td> <td> - When true, code will be dynamically generated at runtime for expression evaluation in a specific - query. For some queries with complicated expression this option can lead to significant speed-ups. + When true, use the optimized Tungsten physical execution backend which explicitly manages memory + and dynamically generates bytecode for expression evaluation. </td> </tr> <tr> |