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| author | Davies Liu <davies.liu@gmail.com> | 2015-08-06 17:36:12 -0700 |
|---|---|---|
| committer | Davies Liu <davies.liu@gmail.com> | 2015-08-06 17:36:12 -0700 |
| commit | 49b1504fe3733eb36a7fc6317ec19aeba5d46f97 (patch) | |
| tree | a93be461f9bce64e664f47e8b784374bf5a4234e /docs | |
| parent | 0867b23c74a3e6347d718b67ddabff17b468eded (diff) | |
| download | spark-49b1504fe3733eb36a7fc6317ec19aeba5d46f97.tar.gz spark-49b1504fe3733eb36a7fc6317ec19aeba5d46f97.tar.bz2 spark-49b1504fe3733eb36a7fc6317ec19aeba5d46f97.zip | |
Revert "[SPARK-9228] [SQL] use tungsten.enabled in public for both of codegen/unsafe"
This reverts commit 4e70e8256ce2f45b438642372329eac7b1e9e8cf.
Diffstat (limited to 'docs')
| -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 6c317175d3..3ea77e8242 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.tungsten.enabled</code></td> + <td><code>spark.sql.codegen</code></td> <td>true</td> <td> - When true, use the optimized Tungsten physical execution backend which explicitly manages memory - and dynamically generates bytecode for expression evaluation. + 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. </td> </tr> <tr> |