Fixed a sign compare warning.
diff --git a/cli/distributed/Executor.cpp b/cli/distributed/Executor.cpp
index 1415e99..4ca5693 100644
--- a/cli/distributed/Executor.cpp
+++ b/cli/distributed/Executor.cpp
@@ -65,7 +65,7 @@
const vector<numa_node_id> worker_numa_nodes(FLAGS_num_workers, kAnyNUMANodeID);
vector<client_id> worker_client_ids;
- for (std::size_t worker_thread_index = 0;
+ for (int worker_thread_index = 0;
worker_thread_index < FLAGS_num_workers;
++worker_thread_index) {
workers_.push_back(make_unique<Worker>(worker_thread_index, &bus_local_,
