devmadhuu commented on PR #10326:
URL: https://github.com/apache/ozone/pull/10326#issuecomment-4646831429
> Some questions for you devesh!
>
> Potentially too many SCM calls on normal `CLOSED` / `QUASI_CLOSED` reports
>
> Current logic does this:
>
> ```
> if (isClosedReplicaState(state)) {
> reconcileContainerFromScm(containerID,containerInfo,reconState,state);
> return;
> }
> ```
>
> That means **any** DN report with replica state `CLOSED` or `QUASI_CLOSED`
triggers an SCM lookup, regardless of Recon’s current state.
>
> This may be expensive during FCR processing, because most containers in a
healthy cluster are already `CLOSED`. If every repeated closed replica report
causes `scmClient.getContainerWithPipeline(...)`, Recon may put unnecessary
load on SCM.
Yes, so to handle that, few optimizations and how Recon should handle
various state transitions for containers, refer attached screenshot, need to
conclude.
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