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From zu...@apache.org
Subject [18/33] incubator-quickstep git commit: Change the default value of Joined Tuple Collector (#226)
Date Mon, 30 May 2016 23:21:17 GMT
Change the default value of Joined Tuple Collector (#226)

On NUMA boxes, the vector based joined tuple collector slows down queries.

Project: http://git-wip-us.apache.org/repos/asf/incubator-quickstep/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-quickstep/commit/a25da390
Tree: http://git-wip-us.apache.org/repos/asf/incubator-quickstep/tree/a25da390
Diff: http://git-wip-us.apache.org/repos/asf/incubator-quickstep/diff/a25da390

Branch: refs/heads/travis-grpc
Commit: a25da39001017360907ee523d94b48cb4417fe24
Parents: 3c84537
Author: Jignesh Patel <pateljm@users.noreply.github.com>
Authored: Wed May 18 11:56:53 2016 -0500
Committer: Zuyu Zhang <zzhang@pivotal.io>
Committed: Mon May 30 15:47:51 2016 -0700

----------------------------------------------------------------------
 relational_operators/HashJoinOperator.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-quickstep/blob/a25da390/relational_operators/HashJoinOperator.cpp
----------------------------------------------------------------------
diff --git a/relational_operators/HashJoinOperator.cpp b/relational_operators/HashJoinOperator.cpp
index 104a02d..aa03794 100644
--- a/relational_operators/HashJoinOperator.cpp
+++ b/relational_operators/HashJoinOperator.cpp
@@ -59,7 +59,7 @@ namespace quickstep {
 
 namespace {
 
-DEFINE_bool(vector_based_joined_tuple_collector, true,
+DEFINE_bool(vector_based_joined_tuple_collector, false,
             "If true, use simple vector-based joined tuple collector in "
             "hash join, with a final sort pass to group joined tuple pairs "
             "by inner block. If false, use unordered_map based collector that "


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