jadami10 opened a new pull request #7823:
URL: https://github.com/apache/pinot/pull/7823


   ## Description
   <!-- Add a description of your PR here.
   A good description should include pointers to an issue or design document, 
etc.
   -->
   This fixes #7811. In #7264 we added exceptions when not all segments are 
available, but this was one case that was missed. Specifically if all servers 
are unavailable, both realtime and offline requests become null, but there are 
still unavailable segments. This adds the exception to the broker response.
   
   There's no unit tests here which makes it quite difficult for me to setup 
something. But I tested locally by running  the realtime quickstart
   - i ran the query and saw results
   - i "dropped" the server and saw no results
   - i then applied this fix, reran the server drop, and saw the exception
   
![image](https://user-images.githubusercontent.com/4760722/143162746-5bd7abae-6299-4486-918b-c3a635ff488e.png)
   
   ## 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
   -->
   This will get encompassed whenever the new error code documentation is done.


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