exists = response.isExists();
        } catch (final Exception e) {
            logger.debug("Failed to check {} index status.", indexName, e);
        }
        return exists;
    }

    public boolean copyDocIndex(final String fromIndex, final String toIndex, final boolean waitForCompletion) {

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "click_log";
    }

    @Override
    public String xgetAliasName() {
        return "click_log";
    }

    // ===================================================================================