Xinyu Tan created IOTDB-1399:
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             Summary: Implement session fault tolerance mechanism which is 
transparent to the business layer
                 Key: IOTDB-1399
                 URL: https://issues.apache.org/jira/browse/IOTDB-1399
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Client/Java, Cluster
            Reporter: Xinyu Tan
             Fix For: master branch


While the cluster is running, the coordinator node may go down, which may cause 
the session to be unable to read or write properly. However, it is possible 
that most of the nodes in the cluster are running, and a different coordinator 
node can work just fine. Therefore, it is necessary to make the Session 
interface more adaptable to the cluster, including but not limited to 
transparent fault tolerance for the business layer and query load balancing.



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