[LI-HOTFIX] Renaming the async fetcher classes to Async*#143
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xiowu0
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gitlw
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…ca fetcher threads (#143) (#144) TICKET = N/A LI_DESCRIPTION = This PR adds a new config li.async.fetcher.enable to control whether the event-based fetcher threads should be used. It chooses either the asyncReplicaFetcherManager or the replicaFetcherManager based on the new config li.async.fetcher.enable EXIT_CRITERIA = N/A
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Mar 25, 2022
…ca fetcher threads (linkedin#143) (linkedin#144) TICKET = N/A LI_DESCRIPTION = This PR adds a new config li.async.fetcher.enable to control whether the event-based fetcher threads should be used. It chooses either the asyncReplicaFetcherManager or the replicaFetcherManager based on the new config li.async.fetcher.enable EXIT_CRITERIA = N/A
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…fetcher threads (linkedin#143) (linkedin#144) TICKET = N/A LI_DESCRIPTION = This PR adds a new config li.async.fetcher.enable to control whether the event-based fetcher threads should be used. It chooses either the asyncReplicaFetcherManager or the replicaFetcherManager based on the new config li.async.fetcher.enable EXIT_CRITERIA = N/A
earlcoder
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The async/event-based replica fetcher series (TransferLeaderManager, AbstractAsyncFetcher, AsyncReplicaFetcher, FetcherEventBus, FetcherEventManager — PRs #121/#123/#124/#143/#144/#403/#406) was removed in the PR #538 squash. The li.async.fetcher.enable config key was left behind in KafkaConfig as dead surface area: it parsed and validated, but had no consumers. Going with audit P1 #6 option (a): retire the feature, remove the dead config key. Operators with li.async.fetcher.enable=<anything> in their server.properties may see an 'Unknown configuration' warning at broker startup; this is harmless — the broker still starts and the value would have been a no-op anyway. Removes: - Defaults.LiAsyncFetcherEnabled - KafkaConfig.LiAsyncFetcherEnableProp - The brokerConfigDef.define(...) registration - KafkaConfig.liAsyncFetcherEnable accessor Audit option (b) — porting the entire async fetcher series forward into 3.6-li — was deferred. If the optimization is needed in the future, it would need to be reimplemented from scratch on top of upstream's current ReplicaFetcherThread / ReplicaFetcherManager.
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TICKET = N/A
LI_DESCRIPTION =
I'd like to add a config to control whether the async fetcher threads feature should be enabled.
In order to do that, I'm using this PR to rename all the async fetcher classes by adding an
Asyncprefix.In a subsequent PR, I'll add the previous behavior back, including the classes for supporting lock-based fetcher threads.
EXIT_CRITERIA = N/A
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