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https://issues.apache.org/jira/browse/IGNITE-26008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksandr Polovtsev updated IGNITE-26008:
-----------------------------------------
Description:
When collecting performance statistics on a read-heavy workload the following
issue was discovered: a huge number of CompletableFutures are produced by the
{{PartitionReplicaListener#retrieveExactEntriesUntilCursorEmpty}} method. This
issue can be fixed by avoiding future allocations in cases Write Intent
Resolution is not needed.
Here's the number of allocations before the proposed fix:
!Screenshot 2025-07-23 at 18.48.07.png|width=1000,height=150!
And here's the number of allocations after the fix (the number of the futures
is nearly negligible):
!Screenshot 2025-07-23 at 18.49.11.png|width=1000,height=150!
was:
When collecting performance statistics on a read-heavy workload the following
issue was discovered: a huge number of CompletableFutures are produced by the
{{PartitionReplicaListener#retrieveExactEntriesUntilCursorEmpty}} method. This
issue can be fixed by avoiding future allocations in cases Write Intent
Resolution is not needed.
Here's the number of allocations before the proposed fix:
!Screenshot 2025-07-23 at 18.48.07.png|width=700,height=150!
And here's the number of allocations after the fix (the number of the futures
is nearly negligible):
!Screenshot 2025-07-23 at 18.49.11.png|width=700,height=150!
> Reduce the number of CompletableFutures produced by PartitionReplicaListener
> ----------------------------------------------------------------------------
>
> Key: IGNITE-26008
> URL: https://issues.apache.org/jira/browse/IGNITE-26008
> Project: Ignite
> Issue Type: Improvement
> Reporter: Aleksandr Polovtsev
> Assignee: Aleksandr Polovtsev
> Priority: Major
> Labels: ignite-3
> Attachments: Screenshot 2025-07-23 at 18.48.07.png, Screenshot
> 2025-07-23 at 18.49.11.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When collecting performance statistics on a read-heavy workload the following
> issue was discovered: a huge number of CompletableFutures are produced by the
> {{PartitionReplicaListener#retrieveExactEntriesUntilCursorEmpty}} method.
> This issue can be fixed by avoiding future allocations in cases Write Intent
> Resolution is not needed.
> Here's the number of allocations before the proposed fix:
> !Screenshot 2025-07-23 at 18.48.07.png|width=1000,height=150!
> And here's the number of allocations after the fix (the number of the futures
> is nearly negligible):
> !Screenshot 2025-07-23 at 18.49.11.png|width=1000,height=150!
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