void restart(RestartCallback callback) throws Exception {
assert callback != null;
if (!node.isClosed()) {
node.close();
}
Settings newSettings = callback.onNodeStopped(name);
if (newSettings == null) {
newSettings = ImmutableSettings.EMPTY;
}
if (callback.clearData(name)) {
NodeEnvironment nodeEnv = getInstanceFromNode(NodeEnvironment.class, node);
if (nodeEnv.hasNodeFile()) {
FileSystemUtils.deleteRecursively(nodeEnv.nodeDataLocations());
}
}
node = (InternalNode) nodeBuilder().settings(node.settings()).settings(newSettings).node();
resetClient();
}
