From 3264611447be6ea644474f88c51e958bb94cb5d2 Mon Sep 17 00:00:00 2001
From: Olivier Lamy <olamy@apache.org>
Date: Wed, 20 Jan 2010 11:54:02 +0000
Subject: [PATCH] [MNG-4432] reimplement parallel artifacts download Prevent
 possible ConcurrentModificationException

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-3/trunk@901149 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/maven/cli/ConsoleMavenTransferListener.java  | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/maven-embedder/src/main/java/org/apache/maven/cli/ConsoleMavenTransferListener.java b/maven-embedder/src/main/java/org/apache/maven/cli/ConsoleMavenTransferListener.java
index 98f5489c34..103ede33c2 100644
--- a/maven-embedder/src/main/java/org/apache/maven/cli/ConsoleMavenTransferListener.java
+++ b/maven-embedder/src/main/java/org/apache/maven/cli/ConsoleMavenTransferListener.java
@@ -20,9 +20,8 @@
  */
 
 import java.io.PrintStream;
-import java.util.Collections;
-import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.apache.maven.repository.ArtifactTransferEvent;
 import org.apache.maven.repository.ArtifactTransferResource;
@@ -36,8 +35,7 @@ class ConsoleMavenTransferListener
     extends AbstractMavenTransferListener
 {
 
-    private Map<ArtifactTransferResource, Long> downloads =
-        Collections.synchronizedMap( new LinkedHashMap<ArtifactTransferResource, Long>() );
+    private Map<ArtifactTransferResource, Long> downloads = new ConcurrentHashMap<ArtifactTransferResource, Long>();
 
     private int lastLength;