clintropolis opened a new pull request #12023:
URL: https://github.com/apache/druid/pull/12023


   ### Description
   The documentation specifies that using a `timeout` of `0`, however this was 
actually a lie and specifying a timeout of 0 would cause a query to timeout and 
fail immediately.
   
   This PR fixes this issue, but also doesn't completely allow infinite timeout 
to be totally within the users control (with no way for the server-side to 
mitigate) so instead allows 0 to use the maximum server-side timeout 
`druid.server.http.maxQueryTimeout`, which defaults to `Long.MAX_VALUE` so is 
effectively unlimited unless explicitly configured by operators.
   
   <hr>
   
   <!-- Check the items by putting "x" in the brackets for the done things. Not 
all of these items apply to every PR. Remove the items which are not done or 
not relevant to the PR. None of the items from the checklist below are strictly 
necessary, but it would be very helpful if you at least self-review the PR. -->
   
   This PR has:
   - [x] been self-reviewed.
   - [x] added documentation for new or modified features or behaviors.
   - [x] added comments explaining the "why" and the intent of the code 
wherever would not be obvious for an unfamiliar reader.
   - [x] added unit tests or modified existing tests to cover new code paths, 
ensuring the threshold for [code 
coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md)
 is met.
   - [x] been tested in a test Druid cluster.
   


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