[jira] [Created] (HDDS-14243) Simplify and document HddsDispatcher#dispatch

["Ivan Andika (Jira)" <ji...@apache.org>]

Ivan Andika created HDDS-14243:
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             Summary: Simplify and document HddsDispatcher#dispatch
                 Key: HDDS-14243
                 URL: https://issues.apache.org/jira/browse/HDDS-14243
             Project: Apache Ozone
          Issue Type: Improvement
            Reporter: Ivan Andika
            Assignee: Ivan Andika


HddsDispatcher#dispatchRequest is a single long complicated function which was called by ContainerStateMachine#dispatchCommand which are called in multiple places
 * ContainerStateMachine#writeStateMachineData: For Write Pipeline V1 when handling writeChunk
 * ContainerStateMachine#readMachineData: For Write Pipeline V1 when reading the cached writeChunk data before replicating to the followers
 * ContainerStateMachine#getStreamDataChannel : For Streaming Write Pipeline:
 * ContainerStateMachine#query: For read requests (this should be unused)

Even if HddsDispatcher#dispatchRequest call KeyValueHandler#handle which will have a defer to handler request, the complicated HddsDispatcher#dispatchRequest and lack of documentation makes it hard to know which handler is going to be called.

We need to simplify and document this.



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