mayankshriv opened a new pull request #7093:
URL: https://github.com/apache/incubator-pinot/pull/7093
## Description
There are cases where we want to be able to system info of
instances in the cluster, for example, we would like to know how many
cores, RAM, heap etc do each server for a table in the cluster have.
In this PR, we add this information as a `mapFields` property in the
instance config. Storing this information in ZK can provide a global view
of the cluster, as opposed to each instance individually knowing about
itself.
```
"mapFields": {
"SYSTEM_RESOURCE_INFO": {
"numCores": "16",
"totalMemoryMB": "32768",
"maxHeapSizeMB": "8192"
}
}
```
## Upgrade Notes
Does this PR prevent a zero down-time upgrade? (Assume upgrade order:
Controller, Broker, Server, Minion)
* [ ] Yes (Please label as **<code>backward-incompat</code>**, and complete
the section below on Release Notes)
Does this PR fix a zero-downtime upgrade introduced earlier?
* [ ] Yes (Please label this as **<code>backward-incompat</code>**, and
complete the section below on Release Notes)
Does this PR otherwise need attention when creating release notes? Things to
consider:
- New configuration options
- Deprecation of configurations
- Signature changes to public methods/interfaces
- New plugins added or old plugins removed
* [ ] Yes (Please label this PR as **<code>release-notes</code>** and
complete the section on Release Notes)
## Release Notes
<!-- If you have tagged this as either backward-incompat or release-notes,
you MUST add text here that you would like to see appear in release notes of
the
next release. -->
<!-- If you have a series of commits adding or enabling a feature, then
add this section only in final commit that marks the feature completed.
Refer to earlier release notes to see examples of text.
-->
## Documentation
<!-- If you have introduced a new feature or configuration, please add it to
the documentation as well.
See
https://docs.pinot.apache.org/developers/developers-and-contributors/update-document
-->
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