Merge pull request #1356 from ligangty/metadata

Mark as deleted even if the metadata not existed in store for metadata merging

Author: ligangty

addons/pkg-maven/common/src/main/java/org/commonjava/indy/pkg/maven/change/MetadataMergePomChangeListener.java

@@ -138,7 +138,7 @@ private void metaClear( final FileEvent event )
         catch ( final IndyDataException e )
         {
             logger.warn( "Failed to regenerate maven-metadata.xml for artifacts after deployment to: {}"
-                                 + "\nCannot retrieve associated groups: {}", e, key, e.getMessage() );
+                                 + "\nCannot retrieve associated groups: {}", key, e.getMessage() );
         }
     }
 
@@ -181,6 +181,15 @@ private boolean doClear( final ArtifactStore store, final String path )
                     fileEvent.fire( new FileDeletionEvent( item, new EventMetadata() ) );
                 }
             }
+            else if ( item.getPath().endsWith( MavenMetadataMerger.METADATA_NAME ) )
+            {
+                // we should return true here to trigger cache cleaning, because file not exists in store does not mean
+                // metadata not exists in cache.
+                logger.debug(
+                        "Metadata clean for {}: metadata not existed in store, so skipped deletion and mark as deleted",
+                        item );
+                return true;
+            }
         }
         return isCleared;
     }