Only notify ready global checkpoint listeners #33690
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When we add a global checkpoint listener, it is also carries along with it a value that it thinks is the current global checkpoint. This value can be above the actual global checkpoint on a shard if the listener knows the global checkpoint from another shard copy (e.g., the primary), and the current shard copy is lagging behind. Today we notify the listener whenever the global checkpoint advances, regardless if it goes above the current global checkpoint known to the listener. This commit reworks this implementation. Rather than thinking of the value associated with the listener as the current global checkpoint known to the listener, we think of it as the value that the listener is waiting for the global checkpoint to advance to (inclusive). Now instead of notifying all waiting listeners when the global checkpoint advances, we only notify those that are waiting for a value not larger than the actual global checkpoint that we advanced to.
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dnhatn
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server/src/main/java/org/elasticsearch/index/shard/GlobalCheckpointListeners.java
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* master: (24 commits) Only notify ready global checkpoint listeners (elastic#33690) Don't count hits via the collector if the hit count can be computed from index stats. (elastic#33701) Expose retries for CCR fetch failures (elastic#33694) Test fix - Graph vertices could appear in different orders based on map insertion sequence (elastic#33709) Structured audit logging (elastic#31931) Core: Add DateFormatter interface for java time parsing (elastic#33467) [CCR] Check whether the rejected execution exception has the shutdown flag set (elastic#33703) Mute ClusterDisruptionIT#testSendingShardFailure Revert "Mute FullClusterRestartSettingsUpgradeIT" Adjust BWC version on settings upgrade test (elastic#33650) [ML] Allow overrides for some file structure detection decisions (elastic#33630) Adapt skip version for doc_values format deprecation [TEST] wait for no initializing shards [Docs] Minor fix in `has_child` javadoc comment (elastic#33674) Mute FullClusterRestartSettingsUpgradeIT [Kerberos] Add realm name & UPN to user metadata (elastic#33338) [TESTS] Disable specific locales for RestrictedTrustManagerTest (elastic#33299) SQL: Return functions in JDBC driver metadata (elastic#33672) SCRIPTING: Move terms_set Context to its Own Class (elastic#33602) AwaitsFix testRestoreMinmal ...
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When we add a global checkpoint listener, it is also carries along with it a value that it thinks is the current global checkpoint. This value can be above the actual global checkpoint on a shard if the listener knows the global checkpoint from another shard copy (e.g., the primary), and the current shard copy is lagging behind. Today we notify the listener whenever the global checkpoint advances, regardless if it goes above the current global checkpoint known to the listener. This commit reworks this implementation. Rather than thinking of the value associated with the listener as the current global checkpoint known to the listener, we think of it as the value that the listener is waiting for the global checkpoint to advance to (inclusive). Now instead of notifying all waiting listeners when the global checkpoint advances, we only notify those that are waiting for a value not larger than the actual global checkpoint that we advanced to.
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When we add a global checkpoint listener, it is also carries along with it a value that it thinks is the current global checkpoint. This value can be above the actual global checkpoint on a shard if the listener knows the global checkpoint from another shard copy (e.g., the primary), and the current shard copy is lagging behind. Today we notify the listener whenever the global checkpoint advances, regardless if it goes above the current global checkpoint known to the listener. This commit reworks this implementation. Rather than thinking of the value associated with the listener as the current global checkpoint known to the listener, we think of it as the value that the listener is waiting for the global checkpoint to advance to (inclusive). Now instead of notifying all waiting listeners when the global checkpoint advances, we only notify those that are waiting for a value not larger than the actual global checkpoint that we advanced to.