log: reduce the number of Error logs and update readme
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@@ -2916,7 +2916,7 @@ static int _dns_client_send_packet(struct dns_query_struct *query, void *packet,
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}
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if (atomic_read(&query->dns_request_sent) <= 0) {
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tlog(TLOG_ERROR, "Send query to upstream server failed, total server number %d", total_server);
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tlog(TLOG_WARN, "Send query to upstream server failed, total server number %d", total_server);
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return -1;
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}
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