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scylladb/test
Avi Kivity 0584db1eb3 Merge "Unstall cleanup_compaction::get_ranges_for_invalidation" from Benny
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This series adds maybe_yield called from
cleanup_compaction::get_ranges_for_invalidation
to avoid reactor stalls.

To achieve that, we first extract bool_class can_yield
to utils/maybe_yield.hh, and add a convience helper:
utils::maybe_yield(can_yield) that conditionally calls
seastar::thread::maybe_yield if it can (when called in a
seastar thread).

With that, we add a can_yield parameter to dht::to_partition_ranges
and dht::partition_range::deoverlap (defaults to false), and
use it from cleanup_compaction::get_ranges_for_invalidation,
as the latter is always called from `consume_in_thread`.

Fixes #7674

Test: unit(dev)
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* tag 'unstall-get_ranges_for_invalidation-v2' of github.com:bhalevy/scylla:
  compaction: cleanup_compaction: get_ranges_for_invalidation: add yield points
  dht/i_partitioner: to_partition_ranges: support yielding
  locator: extract can_yield to utils/maybe_yield.hh
2020-11-29 14:10:39 +02:00
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