/** * Refresh the includes/excludes information. * * @throws IOException */ public synchronized void refreshNodes() throws IOException { hostsReader.refresh(); LOG.info( "After refresh Included hosts: " + hostsReader.getHostNames().size() + " Excluded hosts: " + hostsReader.getExcludedHosts().size()); Set<String> newHosts = hostsReader.getHostNames(); Set<String> newExcludes = hostsReader.getExcludedHosts(); Set<ClusterNode> hostsToExclude = new HashSet<ClusterNode>(); for (ClusterNode tmpNode : nameToNode.values()) { String host = tmpNode.getHost(); // Check if not included or explicitly excluded. if (!newHosts.contains(host) || newExcludes.contains(host)) { hostsToExclude.add(tmpNode); } } for (ClusterNode node : hostsToExclude) { synchronized (node) { for (Map.Entry<ResourceType, RunnableIndices> entry : typeToIndices.entrySet()) { ResourceType type = entry.getKey(); RunnableIndices r = entry.getValue(); if (r.hasRunnable(node)) { LOG.info( "Node " + node.getName() + " is no longer " + type + " runnable because it is excluded"); r.deleteRunnable(node); } } } } }