441257 fixed maven caches are flushed too frequently during forced update

Change-Id: I9cabb666df1880a36556c7d4b4ac6640528089a0
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/ProjectCachePlunger.java b/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/ProjectCachePlunger.java
index 59f20f3b..69d18c4b 100644
--- a/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/ProjectCachePlunger.java
+++ b/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/ProjectCachePlunger.java
@@ -15,6 +15,9 @@ import java.io.File;
 import java.util.HashSet;
 import java.util.Set;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
 
@@ -35,6 +38,8 @@ import org.eclipse.m2e.core.internal.embedder.MavenExecutionContext;
  */
 abstract class ProjectCachePlunger<Key> {
 
+  private final Logger log = LoggerFactory.getLogger(getClass());
+
   final Multimap<File, Key> projectKeys = HashMultimap.create();
 
   final Multimap<Key, File> keyProjects = HashMultimap.create();
@@ -58,6 +63,7 @@ abstract class ProjectCachePlunger<Key> {
       keyProjects.remove(cacheKey, pom);
       if(forceDependencyUpdate && RepositoryPolicy.UPDATE_POLICY_ALWAYS.equals(session.getUpdatePolicy())
           && sessionCache.get(session, cacheKey) == null) {
+        sessionCache.put(session, cacheKey, Boolean.TRUE);
         for(File affectedPom : keyProjects.removeAll(cacheKey)) {
           affectedProjects.add(affectedPom);
           projectKeys.remove(affectedPom, cacheKey);
@@ -65,6 +71,7 @@ abstract class ProjectCachePlunger<Key> {
       }
       if(!keyProjects.containsKey(cacheKey)) {
         flush(cacheKey);
+        log.debug("Flushed cache entry for {}", cacheKey);
       }
     }