[jira] [Commented] (RATIS-183) In gRPC, Follower should not wait for log sync to process next appendEntries

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/RATIS-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16312649#comment-16312649 ] 

Tsz Wo Nicholas Sze commented on RATIS-183:
-------------------------------------------

We probably should add a RaftServerAsynchronousProtocol with aync appendEntries.

> In gRPC, Follower should not wait for log sync to process next appendEntries
> ----------------------------------------------------------------------------
>
>                 Key: RATIS-183
>                 URL: https://issues.apache.org/jira/browse/RATIS-183
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Mukul Kumar Singh
>            Assignee: Mukul Kumar Singh
>
> Currently the followers in a Ratis ring append entries synchronously on raft log sync. This happens because of the following code. server.appendEntries(request) which further invokes raft log sync.
> {code}
> //RaftServerProtocolService.java
>   @Override
>   public StreamObserver<AppendEntriesRequestProto> appendEntries(
>       StreamObserver<AppendEntriesReplyProto> responseObserver) {
>     return new StreamObserver<AppendEntriesRequestProto>() {
>       @Override
>       public void onNext(AppendEntriesRequestProto request) {
>         try {
>           final AppendEntriesReplyProto reply = server.appendEntries(request);
>           responseObserver.onNext(reply);
>         } catch (Throwable e) {
>     ...
>   }
> {code}



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