ArafatKhan2198 commented on PR #4054:
URL: https://github.com/apache/ozone/pull/4054#issuecomment-1361362145
So at the moment, a pipeline can have either **_1 or 3 datanodes_** hence
the reason why we have datanode-0, datanode-1 & datanode-2 therefore they are
not generated randomly.
```
First Map -> Pipeline-Id as the Key & a Map of all DataNodes part of the
pipeline as Value
Second Map -> Datanode number as the key & a Map of all the information
about the specific datanode as Value
Third Map -> Role, UUID & Hostname as key & their respective Strings metric
as Value
```
```
key: pipeline id
value: {
key: Datanode-0
value: {
key:
value:
}
}
```
So if we remove the third map, we would probably lose out the information we
needed to display in the first place.
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