From 2bf9a0f10c60e7f62cfc6eaa9fce78ae119a4eb2 Mon Sep 17 00:00:00 2001
From: Guolin Ke <guolin.ke@outlook.com>
Date: Thu, 26 Sep 2019 12:08:39 +0800
Subject: [PATCH] remove the duplicate data path (#2432)

* fix

* fix the bug
---
 src/io/config.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/io/config.cpp b/src/io/config.cpp
index dd0c8fe6043..8ef537bdf80 100644
--- a/src/io/config.cpp
+++ b/src/io/config.cpp
@@ -234,6 +234,19 @@ void Config::Set(const std::unordered_map<std::string, std::string>& params) {
   }
   CHECK(valid.size() == valid_data_initscores.size());
 
+  if (valid_data_initscores.empty()) {
+    std::vector<std::string> new_valid;
+    for (size_t i = 0; i < valid.size(); ++i) {
+      if (valid[i] != data) {
+        // Only push the non-training data
+        new_valid.push_back(valid[i]);
+      } else {
+        is_provide_training_metric = true;
+      }
+    }
+    valid = new_valid;
+  }
+
   // check for conflicts
   CheckParamConflict();