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Merge branch 'erikj/fix_stalled_catchup' into develop

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Erik Johnston 2021-04-08 18:05:35 +01:00
commit be0e722fe1
2 changed files with 5 additions and 2 deletions
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1
changelog.d/9770.bugfix Normal file
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@ -0,0 +1 @@
Fix bug where sharded federation senders could get stuck repeatedly querying the DB in a loop, using lots of CPU.

6
synapse/federation/sender/__init__.py
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@ -734,16 +734,18 @@ class FederationSender(AbstractFederationSender):
self._catchup_after_startup_timer = None self._catchup_after_startup_timer = None
break break
last_processed = destinations_to_wake[-1]
destinations_to_wake = [ destinations_to_wake = [
d d
for d in destinations_to_wake for d in destinations_to_wake
if self._federation_shard_config.should_handle(self._instance_name, d) if self._federation_shard_config.should_handle(self._instance_name, d)
] ]
for last_processed in destinations_to_wake: for destination in destinations_to_wake:
logger.info( logger.info(
"Destination %s has outstanding catch-up, waking up.", "Destination %s has outstanding catch-up, waking up.",
last_processed, last_processed,
) )
self.wake_destination(last_processed) self.wake_destination(destination)
await self.clock.sleep(CATCH_UP_STARTUP_INTERVAL_SEC) await self.clock.sleep(CATCH_UP_STARTUP_INTERVAL_SEC)