David Bidorff created IGNITE-4029:
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Summary: Local ContinuousQueries on PARTITIONED caches may await for previously rejected events
Key: IGNITE-4029
URL:
https://issues.apache.org/jira/browse/IGNITE-4029 Project: Ignite
Issue Type: Bug
Components: cache
Affects Versions: 1.7
Reporter: David Bidorff
Priority: Minor
{{CacheContinuousQueryHandler.PartitionRecovery.collectEntries()}} stores and updates the identifier of the next expected event. However, some events may be rejected before even reaching the query handler, preventing this counter to be incremented and leading the next events to be queued until {{MAX_BUFF_SIZE}} is reached.
This happens after data was rebalanced: some events may be handled as happening on a backup node, leading the test {{primary || skipPrimaryCheck}} (on line 410 of {{CacheContinuousQueryHandler.onEntryUpdate()}}) to be false and preventing the previously mentioned counter to be increased.
I'm not sure if the main problem is about those events being considered has happening on a backup node or if it is about the counter not being incremented, but either way, this can be problematic on caches with very few 'update events' where the {{MAX_BUFF_SIZE}} is not reached quickly.
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