philo-he commented on code in PR #13115:
URL: https://github.com/apache/gluten/pull/13115#discussion_r4149042025
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cpp/velox/compute/VeloxBackend.cc:
##########
@@ -254,6 +255,10 @@ void VeloxBackend::init(
std::make_unique<folly::CPUThreadPoolExecutor>(ioThreads,
folly::CPUThreadPoolExecutor::makeLifoSemQueue());
}
+ const auto hashTableBuildThreads =
+ std::max<int32_t>(1, backendConf_->get<int32_t>(kHashTableBuildThreads,
numTaskSlotsPerExecutor));
+ hashTableBuildExecutor_ =
std::make_unique<folly::CPUThreadPoolExecutor>(hashTableBuildThreads);
Review Comment:
+1. This thread pool is very specific. No need to create the executor
unconditionally at backend init time.
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