Replace complex boolean expression:
```py
not driver_response_future.has_more_pages or not all_pages
```
with clearer equivalent:
```py
driver_response_future.has_more_pages and all_pages
```
The new expression is more intuitive as it directly checks for both
conditions (having more pages and wanting all pages) rather than using double
negation.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#22969
Fetching only the first page is not the intuitive behavior expected by users.
This causes flakiness in some tests which generate variable amount of
keys depending on execution speed and verify later that all keys were
written using a single SELECT statement. When the amount of keys
becomes larger than page size, the test fails.
Fixes#18774Closesscylladb/scylladb#19004
Provide a flag to fetch all pages for run_async().
Add a simple test to random tables. Runs within 6 seconds in debug mode.
Signed-off-by: Alejo Sanchez <alejo.sanchez@scylladb.com>
