yikf commented on code in PR #13115:
URL: https://github.com/apache/gluten/pull/13115#discussion_r4269125100
##########
cpp/velox/compute/VeloxBackend.cc:
##########
@@ -254,6 +255,10 @@ void VeloxBackend::init(
std::make_unique<folly::CPUThreadPoolExecutor>(ioThreads,
folly::CPUThreadPoolExecutor::makeLifoSemQueue());
}
+ const auto broadcastHashTableBuildThreads =
+ std::max<int32_t>(1,
backendConf_->get<int32_t>(kBroadcastHashTableBuildThreads,
numTaskSlotsPerExecutor));
Review Comment:
It maintains the semantics of this configuration, simply spawning a separate
thread with one core to perform the build, which I find reasonable.
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