RATIS-2340. Add ReadIndexAsync executor for readIndex stateMachine query #1295
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szetszwo
reviewed
Oct 1, 2025
| return replyFuture | ||
| .thenCompose(readIndex -> getReadRequests().waitToAdvance(readIndex)) | ||
| .thenCompose(readIndex -> queryStateMachine(request)) | ||
| .thenComposeAsync(ignored -> stateMachine.query(request.getMessage()), readAsyncExecutor) |
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@symious , Since it is calling stateMachine.query(..), the StateMachine implementation could choose to run it with its own executor. If we use an executor here, then the stateMachine has no choice and is forced to run it with Ratis executor. So I suggest not to make this change.
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What changes were proposed in this pull request?
Currently the query work is done by the ELG worker threads, need to separate the works so that workers can focus on their job.
What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/RATIS-2340
How was this patch tested?
Stack dump shows not using ELG worker threads.