* feat: enable reconfiguration of in-use throttled store
This is handy for tests for which a part should run "normal" and another
one should be throttled/blocked.
* feat: keep track of the number of tasks within a `DedicatedExecutor`
* test: ensure query cancellation (somewhat) works
We cannot really test that query cancellation finishes all subtasks
because _tokio_ doesn't provide sufficient stats / inspection, at least
as long we don't want to rely heavily on _tokio_ tracing. So let's at
least check that tasks from the dedicated executors are pruned properly.
For all other regressions we need to add unit tests to the affected
components. See for example:
- https://github.com/apache/arrow-datafusion/issues/1103
- https://github.com/apache/arrow-datafusion/pull/1105
- https://github.com/apache/arrow-datafusion/pull/1112
- https://github.com/apache/arrow-datafusion/pull/1121Closes#2027.
So that they can be deserialized, without parsing, to create a new
iox object store from the location listed in the server config.
Notably, the locations serialized don't start with the object storage's
prefix like "s3:" or "file:". The location is the same object storage as
the server configuration that was just read from object storage. Having
the server config on one type of object storage and the database files
on another type is not supported.
Marco Neumann
Carol (Nichols || Goulding)
Andrew Lamb