From f91b957e52564ec5dddbeb73ee0c18578a308718 Mon Sep 17 00:00:00 2001
From: Noble Paul <noble@apache.org>
Date: Thu, 11 Sep 2014 02:08:13 +0000
Subject: [PATCH]  SOLR-6499

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1624181 13f79535-47bb-0310-9956-ffa450edef68
---
 .../src/java/org/apache/solr/core/RequestHandlers.java     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/solr/core/src/java/org/apache/solr/core/RequestHandlers.java b/solr/core/src/java/org/apache/solr/core/RequestHandlers.java
index 4c8068efff1..8c4cb3ac647 100644
--- a/solr/core/src/java/org/apache/solr/core/RequestHandlers.java
+++ b/solr/core/src/java/org/apache/solr/core/RequestHandlers.java
@@ -142,7 +142,12 @@ public final class RequestHandlers {
   void initHandlersFromConfig(SolrConfig config, List<PluginInfo> implicits){
     // use link map so we iterate in the same order
     Map<PluginInfo,SolrRequestHandler> handlers = new LinkedHashMap<>();
-    ArrayList<PluginInfo> infos = new ArrayList<>(implicits);
+    Map<String, PluginInfo> implicitInfoMap= new HashMap<>();
+    //deduping implicit and explicit requesthandlers
+    for (PluginInfo info : implicits) implicitInfoMap.put(info.name,info);
+    for (PluginInfo info : config.getPluginInfos(SolrRequestHandler.class.getName()))
+      if(implicitInfoMap.containsKey(info.name)) implicitInfoMap.remove(info.name);
+    ArrayList<PluginInfo> infos = new ArrayList<>(implicitInfoMap.values());
     infos.addAll(config.getPluginInfos(SolrRequestHandler.class.getName()));
     for (PluginInfo info : infos) {
       try {