caiconghui commented on issue #5021:
URL:
https://github.com/apache/incubator-doris/issues/5021#issuecomment-739790072
Some times I found that http response return slow is not because business
logic need to cost lots if time but the http framework constructed by netty. I
have made an experiment.
```
while (true) {
long start = System.currentTimeMillis();
TestHeartBeat.getResultForUrl(url2, null, connection_timeout,
read_timeout);
long cost = System.currentTimeMillis() - start;
String strDateFormat = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
System.out.println( sdf.format(new Date(start)) + " get result2
cost " + cost + "ms");
Thread.sleep(5000);
}
```
olap_tool.sh read_timeout=10000 (timeout here i set it to 10s)
client log
```
2020-12-07 17:15:51 get result2 cost 77ms
2020-12-07 17:15:57 get result2 cost 8ms
2020-12-07 17:16:02 get result2 cost 6ms
2020-12-07 17:16:07 get result2 cost 3254ms
2020-12-07 17:16:15 get result2 cost 6ms
2020-12-07 17:16:20 get result2 cost 7ms
2020-12-07 17:16:25 get result2 cost 7ms
2020-12-07 17:16:30 get result2 cost 3326ms
2020-12-07 17:16:38 get result2 cost 6ms
2020-12-07 17:16:43 get result2 cost 6ms
2020-12-07 17:16:48 get result2 cost 7ms
2020-12-07 17:16:53 get result2 cost 4186ms
2020-12-07 17:17:02 get result2 cost 7ms
2020-12-07 17:17:07 get result2 cost 6ms
2020-12-07 17:17:12 get result2 cost 5ms
```
server log
```
2020-12-07 17:15:51,981 INFO 148 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:15:57,015 INFO 78 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:02,023 INFO 92 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:10,276 INFO 100 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:15,285 INFO 115 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:20,293 INFO 126 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:25,300 INFO 138 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:33,627 INFO 152 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:38,635 INFO 86 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:43,641 INFO 100 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:48,649 INFO 108 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:16:57,835 INFO 119 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:17:02,842 INFO 138 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:17:07,849 INFO 150 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
2020-12-07 17:17:12,855 INFO 80 [RestBaseAction.handleRequest():52] receive
http request. url=/metrics?test_url
```
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