public void write(Stage stage, String group) throws IOException { DBObject q = reader.getStageQuery(stage.getName()); WriteResult result = stages.update(q, getStageDBObject(stage, group), true, false, concern); if (logger.isDebugEnabled()) { logger.debug("Wrote stage '{}' in group '{}', operation updated '{}' objects, got message '{}'", stage.getName(), group, result.getN(), result); } }