chaoyli edited a comment on issue #3517:
URL:
https://github.com/apache/incubator-doris/issues/3517#issuecomment-625588846
The metric is like this
```
[
{
"tags":{
"tablet_id":10010,
"metric":"scanner_rows"
},
"value":1000,
"unit":"number"
},
{
"tags":{
"tablet_id":10010,
"metric":"scanner_bytes"
},
"value":1024,
"unit":"bytes"
}
]
```
Supposing there are 10000 tablets in one BE node.
Every time we will gather 10000 * 200 bytes = 2MB at 15 seconds.
I will use a map to store the information.
And at interval(one hour) will remove unused tablet.
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