private String updateIndexName(String type) {
        String indexName =
                this.indexPrefix + "_" + type + "_" + SIMPLE_DATE_FORMAT.format(new Date());
        createIndex(indexName);
        return indexName;
    }
Initializes the indexes templates task_log, message and event, and mappings.
es6-persistence/src/main/java/com/netflix/conductor/es6/dao/index/ElasticSearchDAOV6.java