From 536d2adc12c88ff67b5dde3dec998bcacef50fba Mon Sep 17 00:00:00 2001
From: KaiXinXiaoLei <huleilei1@huawei.com>
Date: Sun, 2 Aug 2015 20:04:21 -0700
Subject: [PATCH] [SPARK-9535][SQL][DOCS] Modify document for codegen.
#7142 made codegen enabled by default so let's modify the corresponding documents.
Closes #7142
Author: KaiXinXiaoLei <huleilei1@huawei.com>
Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>
Closes #7863 from sarutak/SPARK-9535 and squashes the following commits:
0884424 [Kousuke Saruta] Removed a line which mentioned about the effect of codegen enabled
3c11af0 [Kousuke Saruta] Merge branch 'sqlconfig' of https://github.com/KaiXinXiaoLei/spark into SPARK-9535
4ee531d [KaiXinXiaoLei] delete space
4cfd11d [KaiXinXiaoLei] change spark.sql.planner.externalSort
d624cf8 [KaiXinXiaoLei] sql config is wrong
---
docs/sql-programming-guide.md | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/docs/sql-programming-guide.md b/docs/sql-programming-guide.md
index d31baa080c..3ea77e8242 100644
--- a/docs/sql-programming-guide.md
+++ b/docs/sql-programming-guide.md
@@ -1885,11 +1885,10 @@ that these options will be deprecated in future release as more optimizations ar
</tr>
<tr>
<td><code>spark.sql.codegen</code></td>
- <td>false</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.
- However, for simple queries this can actually slow down query execution.
+ query. For some queries with complicated expression this option can lead to significant speed-ups.
</td>
</tr>
<tr>
@@ -1901,7 +1900,7 @@ that these options will be deprecated in future release as more optimizations ar
</tr>
<tr>
<td><code>spark.sql.planner.externalSort</code></td>
- <td>false</td>
+ <td>true</td>
<td>
When true, performs sorts spilling to disk as needed otherwise sort each partition in memory.
</td>
--
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