[v23.3.x] Non-polling fetch implementation #16484
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(cherry picked from commit 42479b5)
(cherry picked from commit dc4ba96)
(cherry picked from commit 8aec676)
(cherry picked from commit 871d404)
Implements a fetch_plan_executor that doesn't repeatedly poll every partition in the fetch for new data. Instead it relies on registering callbacks with raft:consensus::visible_offset_monitor to know when a partition has new data and therefore would be worth querying once again. (cherry picked from commit 6bab7f3)
…tency (cherry picked from commit 529792a)
(cherry picked from commit ed51c39)
ballard26
approved these changes
Feb 6, 2024
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Backport of PR #15328