private void initColumnName() {
        if (!aliasNameInit) {
            this.endpointTrafficNameAlias = IndexController.LogicIndicesRegister.getPhysicalColumnName(EndpointTraffic.INDEX_NAME, EndpointTraffic.NAME);
            aliasNameInit = true;
        }
    }
When the index column use an alias, we should get it's real physical column name for query.
oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/query/MetadataQueryEsDAO.java