From 536d2adc12c88ff67b5dde3dec998bcacef50fba Mon Sep 17 00:00:00 2001 From: KaiXinXiaoLei Date: Sun, 2 Aug 2015 20:04:21 -0700 Subject: [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 Author: Kousuke Saruta 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(-) (limited to 'docs/sql-programming-guide.md') 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 spark.sql.codegen - false + true 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. @@ -1901,7 +1900,7 @@ that these options will be deprecated in future release as more optimizations ar spark.sql.planner.externalSort - false + true When true, performs sorts spilling to disk as needed otherwise sort each partition in memory. -- cgit v1.2.3