The short answer is that it is not (really); it's just some display
artifact due to how to actual data from the REST API is propagated to
the UI.
On 5/10/2021 3:10 AM, penguin. wrote:
Thanks for your reply，so why is the data of Web UI updated every 3S?
At 2021-05-07 15:19:50, "Chesnay Schepler" <ches...@apache.org> wrote:
To be more precise, the update of the data is scheduled at most
once every 10 seconds, but it can of course happen that the result
of said update arrives in a different interval.
As in, this would be possible:
T00: Issue update 1
T10: Issue update 2
T12: Receive update1
T14: Receive update2
On 5/7/2021 9:14 AM, Chesnay Schepler wrote:
The WebUI also retrieves all data from the REST API, which should
be updated with a minimum interval of 10 seconds.
On 5/7/2021 3:57 AM, penguin. wrote:
On the Web UI page, we can see that the relevant data is updated
every 3S, such as the read-bytes of each operator.
But when I get data through Rest API, the data is updated every
6 seconds or even more than 10 seconds. Why?
The related data of read bytes obtained through Rest API is as
follows:
19:02:04 0 0 0
0 0 0 0
19:02:07 0 0 0
0 0 0 0
19:02:10 0 0 0
0 0 0 0
19:02:13 0 0 0
0 0 0 0
19:02:16 792820 807792 684683
796474 813133 680141 689590
19:02:19 792820 807792 684683
796474 813133 680141 689590
19:02:22 792820 807792 684683
796474 813133 680141 689590
19:02:26 792820 807792 684683
796474 813133 680141 689590
19:02:29 1817569 1815899 1560744
1808234 1836741 1559341 1568711
19:02:32 1817569 1815899 1560744
1808234 1836741 1559341 1568711
19:02:35 1817569 1815899 1560744
1808234 1836741 1559341 1568711
19:02:38 1817569 1815899 1560744
1808234 1836741 1559341 1568711
19:02:41 2796433 2805973 2401927
2797311 2838168 2397542 2417726
19:02:45 2796433 2805973 2401927
2797311 2838168 2397542 2417726
19:02:48 2796433 2805973 2401927
2797311 2838168 2397542 2417726
19:02:51 3649398 3640050 3130583
3624854 3687889 3122333 3144306
19:02:54 3649398 3640050 3130583
3624854 3687889 3122333 3144306
19:02:57 3649398 3640050 3130583
3624854 3687889 3122333 3144306
19:03:00 3649398 3640050 3130583
3624854 3687889 3122333 3144306
19:03:03 4529443 4524218 3881509
4517926 4582770 3884389 3907298
19:03:06 4529443 4524218 3881509
4517926 4582770 3884389 3907298
19:03:09 4529443 4524218 3881509
4517926 4582770 3884389 3907298
19:03:12 5432212 5423566 4659737
5404419 5492786 4649469 4685430
19:03:16 5432212 5423566 4659737
5404419 5492786 4649469 4685430
19:03:19 5432212 5423566 4659737
5404419 5492786 4649469 4685430
19:03:22 5432212 5423566 4659737
5404419 5492786 4649469 4685430
19:03:25 6255327 6243823 5367516
6236577 6321958 5360496 5396446
19:03:28 6255327 6243823 5367516
6236577 6321958 5360496 5396446
19:03:31 6255327 6243823 5367516
6236577 6321958 5360496 5396446
19:03:34 7207042 7203725 6184804
7178875 7286207 6172393 6212499
19:03:37 7207042 7203725 6184804
7178875 7286207 6172393 6212499
19:03:40 7207042 7203725 6184804
7178875 7286207 6172393 6212499
19:03:43 7207042 7203725 6184804
7178875 7286207 6172393 6212499
19:03:47 8064759 8048237 6918715
8034269 8144119 6912701 6957967
19:03:50 8064759 8048237 6918715
8034269 8144119 6912701 6957967
19:03:53 8064759 8048237 6918715
8034269 8144119 6912701 6957967
19:03:56 8903005 8895364 7636796
8880999 9004171 7628515 7684865
19:03:59 8903005 8895364 7636796
8880999 9004171 7628515 7684865
19:04:02 8903005 8895364 7636796
8880999 9004171 7628515 7684865
19:04:05 9764407 9746490 8375615
9721560 9864876 8364266 8420637
19:04:08 9764407 9746490 8375615
9721560 9864876 8364266 8420637
19:04:11 9764407 9746490 8375615
9721560 9864876 8364266 8420637
19:04:14 9764407 9746490 8375615
9721560 9864876 8364266 8420637
19:04:18 10643486 10622845 9124814
10611981 10756388 9123061 9181804
19:04:21 10643486 10622845 9124814
10611981 10756388 9123061 9181804
19:04:24 10643486 10622845 9124814
10611981 10756388 9123061 9181804
19:04:27 11572984 11551082 9927120
11526018 11693689 9912304 9984155
19:04:30 11572984 11551082 9927120
11526018 11693689 9912304 9984155
19:04:33 11572984 11551082 9927120
11526018 11693689 9912304 9984155
19:04:36 11572984 11551082 9927120
11526018 11693689 9912304 9984155
19:04:40 12589024 12563325 10794787
12554152 12720400 10793328 10857505
19:04:44 12589024 12563325 10794787
12554152 12720400 10793328 10857505
19:04:47 12589024 12563325 10794787
12554152 12720400 10793328 10857505
19:04:50 13429485 13407045 11523015
13381818 13570519 11505681 11579628
19:04:53 13429485 13407045 11523015
13381818 13570519 11505681 11579628
19:04:56 13429485 13407045 11523015
13381818 13570519 11505681 11579628
19:04:59 13429485 13407045 11523015
13381818 13570519 11505681 11579628
19:05:02 14341219 14310437 12302435
14295362 14485186 12292233 12371000
19:05:05 14341219 14310437 12302435
14295362 14485186 12292233 12371000
19:05:08 14341219 14310437 12302435
14295362 14485186 12292233 12371000
19:05:11 15200307 15184989 13044311
15159531 15365128 13026223 13118296
19:05:14 15200307 15184989 13044311
15159531 15365128 13026223 13118296
19:05:18 15200307 15184989 13044311
15159531 15365128 13026223 13118296
19:05:21 15200307 15184989 13044311
15159531 15365128 13026223 13118296
19:05:24 16067200 16035181 13785007
16008243 16230192 13765004 13859413
