Tan xinyu created IOTDB-814:
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Summary: Cache and redirect IoTDB's leader for write requests in
IoTDB's client
Key: IOTDB-814
URL: https://issues.apache.org/jira/browse/IOTDB-814
Project: Apache IoTDB
Issue Type: Improvement
Components: Core/Cluster
Reporter: Tan xinyu
For raft based data management systems, the client typically supports the
ability for caching leaders to redirect. This eliminates the need to consume
internal resources and additional Round-Trip time to forward these requests
within the cluster.
For a write request, the coordinator can handle this request without any RPCs
besides a raft broadcast if it finds that the data group's leader corresponding
to the data is itself, otherwise, it can make a request to get the leader of
the data group and return the result to the client instead of forwarding it.The
client then caches this new leader to re-establish the session, and subsequent
requests can be sent directly to the correct node.
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